31607263212 has 72 divisors (see below), whose sum is σ = 88749506160. Its totient is φ = 8719240320.

The previous prime is 31607263201. The next prime is 31607263213. The reversal of 31607263212 is 21236270613.

It is not an unprimeable number, because it can be changed into a prime (31607263213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 909739 + ... + 943842.

It is an arithmetic number, because the mean of its divisors is an integer number (1232632030).

Almost surely, 2^31607263212 is an apocalyptic number.

It is an amenable number.

31607263212 is an abundant number, since it is smaller than the sum of its proper divisors (57142242948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31607263212 is a wasteful number, since it uses less digits than its factorization.

31607263212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853631 (or 1853622 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The spelling of 31607263212 in words is "thirty-one billion, six hundred seven million, two hundred sixty-three thousand, two hundred twelve".