31296972 has 48 divisors (see below), whose sum is σ = 83874560. Its totient is φ = 8897472.

The previous prime is 31296961. The next prime is 31296989. The reversal of 31296972 is 27969213.

It is a self number, because there is not a number n which added to its sum of digits gives 31296972.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18423 + ... + 20049.

Almost surely, 2^31296972 is an apocalyptic number.

It is an amenable number.

31296972 is an abundant number, since it is smaller than the sum of its proper divisors (52577588).

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

31296972 is a wasteful number, since it uses less digits than its factorization.

31296972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870 (or 1868 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 31296972 is about 5594.3696695875. The cubic root of 31296972 is about 315.1379994992.

It can be divided in two parts, 3129 and 6972, that added together give a palindrome (10101).

The spelling of 31296972 in words is "thirty-one million, two hundred ninety-six thousand, nine hundred seventy-two".