9031 = 11 x 821.
9031 is a number that cannot be written as a sum of three squares.
9031 is 13344 in base 9 and 3411 in base 14.
9031 is the difference of two consecutive, nonnegative fifth powers: 75 - 65 = 9031.
9031 is the sum of seven distinct powers of three.
NGC 891, also designated PGC 9031, is an edge-on, unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda.
