31 may refer to:
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31 (number)
31 (thirty-one) is the natural number following thirty, 30 and preceding 32 (number), 32. It is a prime number.
Mathematics
31 is the 11th prime number. It is a superprime and a Self number#Self primes, self prime (after 3, 5, and 7), as no int ...
Years
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31 BC
__NOTOC__
Year 31 BC was either a common year starting on Tuesday, Wednesday or Thursday or a leap year starting on Tuesday or Wednesday of the Julian calendar (the sources differ, see leap year error for further information) and a common yea ...
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AD 31
AD 31 ( XXXI) was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Tiberius and Sejanus (or, less frequently, year 784 ''Ab urbe condita''). The denomination AD 31 for this year ...
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1931
Events
January
* January 2 – South Dakota native Ernest Lawrence invents the cyclotron, used to accelerate particles to study nuclear physics.
* January 4 – German pilot Elly Beinhorn begins her flight to Africa.
* January 22 – Sir I ...
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2031
Predicted and scheduled events
* January 1 – Assuming no further extensions to the term of copyrights become law in the interim, books, films, and other works published in 1935 will enter the public domain.
* January – NASA plans to d ...
Music
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''Thirty One'' (Jana Kramer album), 2015
*
''Thirty One'' (Jarryd James album), 2015
* "Thirty One", a song by Karma to Burn from the album ''
Wild, Wonderful Purgatory
''Wild, Wonderful Purgatory'' is the second studio album by stoner rock band Karma to Burn. The album was released on May 31, 1999, in Europe by Roadrunner UK, and July 7, 1999, in the U.S. by MIA Records. It was reissued on March 18, 2022, by ...
'', 1999
Science
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Gallium
Gallium is a chemical element; it has Chemical symbol, symbol Ga and atomic number 31. Discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in 1875,
elemental gallium is a soft, silvery metal at standard temperature and pressure. ...
, a post-transition metal in the periodic table
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31 Euphrosyne
31 Euphrosyne is one of the largest asteroids (approximately tied for 7th place, to within measurement uncertainties). It was discovered by James Ferguson on September 1, 1854, the first asteroid found from North America. It is named after Euphr ...
, an asteroid in the asteroid belt
* (31) Euphrosyne I, a satellite of
31 Euphrosyne
31 Euphrosyne is one of the largest asteroids (approximately tied for 7th place, to within measurement uncertainties). It was discovered by James Ferguson on September 1, 1854, the first asteroid found from North America. It is named after Euphr ...
Film and television
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''31'' (film), a 2016 horror film
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31 (Kazakhstan)
Channel 31 is a Kazakh nationwide broadcast television station that is based in Almaty, Kazakhstan.
Channel 31 consists of news and thematic programs in both Russian and Kazakh, as well as movies, series, talk shows, and children's, cultural, ...
, a television channel
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31 Digital
31 may refer to:
* 31 (number)
Years
* 31 BC
* AD 31
* 1931
* 2031
Music
* ''Thirty One'' (Jana Kramer album), 2015
* ''Thirty One'' (Jarryd James album), 2015
* "Thirty One", a song by Karma to Burn from the album '' Wild, Wonderful Purg ...
, an Australian video on demand service
Transportation
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31st (CTA station)
31st was a station on the Chicago Transit Authority's South Side Main Line, which is now part of the Green Line. The station was located at 31st Street near State Street in the Douglas neighborhood of Chicago
Chicago is the List of ...
, a rapid transit station in Chicago
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31 (MBTA bus)
The Massachusetts Bay Transportation Authority bus division operates 151 bus routes in the Boston, Massachusetts metropolitan area. All routes connect to MBTA subway, MBTA Commuter Rail, and/or other MBTA bus services. Many routes are descenda ...
, a bus route in Boston, Massachusetts
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31 (RIPTA)
The Rhode Island Public Transit Authority (RIPTA) provides public transportation, primarily buses, in the U.S. state of Rhode Island. The main hub of the RIPTA system is Kennedy Plaza, a large bus terminal in downtown Providence, Rhode Island. A ...
, a bus route in Rhode Island
Other uses
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Thirty-one (card game)
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Baskin-Robbins
Baskin-Robbins, Inc. is an American multinational chain of ice cream and cake specialty store, specialty shops owned by Inspire Brands. Baskin-Robbins was formed in 1945 by Burt Baskin and Irv Robbins in Glendale, California.[the Netherlands
, Terminology of the Low Countries, informally Holland, is a country in Northwestern Europe, with Caribbean Netherlands, overseas territories in the Caribbean. It is the largest of the four constituent countries of the Kingdom of the Nether ...]
See also
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Channel 31 (disambiguation) Channel 31 refers to several television stations:
Australia
The colloquial name for certain community television stations in Australia
* Access 31
* Hitchhike TV, formerly 31 Digital
* C31 Melbourne
* Channel 31 (Sydney)
* Channel 44 (Adelaid ...
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Section 31 (disambiguation) Section 31 may refer to:
* Section 31 (''Star Trek''), a fictional organization
** ''Star Trek: Section 31'' (novel series), a novel series about the organization
** '' Star Trek: Section 31'', a film about the organization
* Section 31 of the ...
*
List of highways numbered 31
{{number disambiguation