Fatto generale: 2713 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 2713 is a boring number.
Trivia: 2713 is an unremarkable number.
Data storica: June 5th is the day in 1989 that the Unknown Rebel halts the progress of a column of advancing tanks for over half an hour after the Tiananmen Square protests of 1989.