31297964 has 12 divisors (see below), whose sum is σ = 54831000. Its totient is φ = 15631968.

The previous prime is 31297961. The next prime is 31298011. The reversal of 31297964 is 46979213.

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 (31297961) 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, 467 + ... + 7925.

It is an arithmetic number, because the mean of its divisors is an integer number (4569250).

Almost surely, 2^31297964 is an apocalyptic number.

It is an amenable number.

31297964 is a deficient number, since it is larger than the sum of its proper divisors (23533036).

31297964 is a wasteful number, since it uses less digits than its factorization.

31297964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8512 (or 8510 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The square root of 31297964 is about 5594.4583294542. The cubic root of 31297964 is about 315.1413290395.

The spelling of 31297964 in words is "thirty-one million, two hundred ninety-seven thousand, nine hundred sixty-four".