general_fact: 23813 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 23813 is an uninteresting number.
trivia: 23813 is an uninteresting number.
historical_date: March 12th is the day in 1622 that Ignatius of Loyola and Francis Xavier, founders of the Jesuits, are canonized as saints by the Catholic Church.