General fact: 87823 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 87823 is a boring number.
Trivia: 87823 is an unremarkable number.
Historical date: June 13th is the day in 2005 that a jury in Santa Maria, California acquits pop singer Michael Jackson of molesting 13-year-old Gavin Arvizo at his Neverland Ranch.