Fait général: 2313 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 2313 is a boring number.
Culture générale: 2313 is an uninteresting number.
Date historique: May 1st is the day in 1933 that the Roca-Runciman Treaty between Argentina and Great Britain is signed by Julio Argentino Roca, Jr., and Sir Walter Runciman.