31607881612 has 24 divisors (see below), whose sum is σ = 55556789904. Its totient is φ = 15734651712.

The previous prime is 31607881607. The next prime is 31607881619. The reversal of 31607881612 is 21618870613.

It is not an unprimeable number, because it can be changed into a prime (31607881619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922858 + ... + 956494.

It is an arithmetic number, because the mean of its divisors is an integer number (2314866246).

Almost surely, 2^31607881612 is an apocalyptic number.

It is an amenable number.

31607881612 is a deficient number, since it is larger than the sum of its proper divisors (23948908292).

31607881612 is a wasteful number, since it uses less digits than its factorization.

31607881612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34665 (or 34663 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 31607881612 in words is "thirty-one billion, six hundred seven million, eight hundred eighty-one thousand, six hundred twelve".