31947952972 has 24 divisors (see below), whose sum is σ = 60971758400. Its totient is φ = 14558558976.

The previous prime is 31947952963. The next prime is 31947952991. The reversal of 31947952972 is 27925974913.

It is a super-2 number, since 2×31947952972² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3884397 + ... + 3892612.

Almost surely, 2^31947952972 is an apocalyptic number.

It is an amenable number.

31947952972 is a deficient number, since it is larger than the sum of its proper divisors (29023805428).

31947952972 is a wasteful number, since it uses less digits than its factorization.

31947952972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7777105 (or 7777103 counting only the distinct ones).

The product of its digits is 8573040, while the sum is 58.

The spelling of 31947952972 in words is "thirty-one billion, nine hundred forty-seven million, nine hundred fifty-two thousand, nine hundred seventy-two".