Fatto generale: 29311 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 29311 is an unremarkable number.
Trivia: 29311 is a boring number.
Data storica: March 31st is the day in 1985 that the first WrestleMania, the biggest wrestling event from the WWE (then the WWF), takes place in Madison Square Garden in New York.