general_fact: 23197 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 23197 is an unremarkable number.
trivia: 23197 is an uninteresting number.
historical_date: July 5th is the day in 1947 that Larry Doby signs a contract with the Cleveland Indians baseball team, becoming the first black player in the American League.