math_fact: 23436 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 23436 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: February 29th is the day in 1956 that U.S. President Dwight D. Eisenhower announces to the nation that he is running for a second term.