Fait général: 5823 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 5823 is the smallest value of n for which n and 3n together use each digit 1-9 exactly once.
Culture générale: 5823 is an unremarkable number.
Date historique: December 10th is the day in 1989 that Tsakhiagiin Elbegdorj announces the establishment of Mongolia's democratic movement that changes the second oldest communist country into a democracy.