Fait général: 23011 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 23011 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 23011 is an unremarkable number.
Date historique: December 31st is the day in 1695 that a window tax is imposed in England, causing many householders to brick up windows to avoid the tax.