Has an AFL game ever ended 113-31?
Exactly once. On June 14, 1924, Essendon beat St Kilda 113-31, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 113-31 in league history.
That makes 113-31 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 114-31 has happened 1 times and 113-32 has happened never.