general_fact: 20317 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 20317 is an unremarkable number.
trivia: 20317 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: August 16th is the day in 1989 that a solar flare from the Sun creates a geomagnetic storm that affects micro chips, leading to a halt of all trading on Toronto's stock market.