31553600972 has 12 divisors (see below), whose sum is σ = 55224797376. Its totient is φ = 15775087440.

The previous prime is 31553600971. The next prime is 31553601041. The reversal of 31553600972 is 27900635513.

It is a happy number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (31553600971) 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, 386363 + ... + 460850.

It is an arithmetic number, because the mean of its divisors is an integer number (4602066448).

Almost surely, 2^31553600972 is an apocalyptic number.

It is an amenable number.

31553600972 is a deficient number, since it is larger than the sum of its proper divisors (23671196404).

31553600972 is a wasteful number, since it uses less digits than its factorization.

31553600972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856528 (or 856526 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 41.

The spelling of 31553600972 in words is "thirty-one billion, five hundred fifty-three million, six hundred thousand, nine hundred seventy-two".