31955360972 has 12 divisors (see below), whose sum is σ = 59211404280. Its totient is φ = 15037816896.

The previous prime is 31955360953. The next prime is 31955360977. The reversal of 31955360972 is 27906355913.

It is a happy number.

It is a super-2 number, since 2×31955360972² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31955360972.

It is not an unprimeable number, because it can be changed into a prime (31955360977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234965822 + ... + 234965957.

It is an arithmetic number, because the mean of its divisors is an integer number (4934283690).

Almost surely, 2^31955360972 is an apocalyptic number.

It is an amenable number.

31955360972 is a deficient number, since it is larger than the sum of its proper divisors (27256043308).

31955360972 is a wasteful number, since it uses less digits than its factorization.

31955360972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469931800 (or 469931798 counting only the distinct ones).

The product of its (nonzero) digits is 1530900, while the sum is 50.

The spelling of 31955360972 in words is "thirty-one billion, nine hundred fifty-five million, three hundred sixty thousand, nine hundred seventy-two".