31231233112 has 16 divisors (see below), whose sum is σ = 58573078200. Its totient is φ = 15611745600.

The previous prime is 31231233053. The next prime is 31231233157. The reversal of 31231233112 is 21133213213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449437 + ... + 514252.

Almost surely, 2^31231233112 is an apocalyptic number.

It is an amenable number.

31231233112 is a deficient number, since it is larger than the sum of its proper divisors (27341845088).

31231233112 is a wasteful number, since it uses less digits than its factorization.

31231233112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967746 (or 967742 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

Adding to 31231233112 its reverse (21133213213), we get a palindrome (52364446325).

The spelling of 31231233112 in words is "thirty-one billion, two hundred thirty-one million, two hundred thirty-three thousand, one hundred twelve".