31297974 has 16 divisors (see below), whose sum is σ = 62842608. Its totient is φ = 10391552.

The previous prime is 31297961. The next prime is 31298011. The reversal of 31297974 is 47979213.

It is a congruent number.

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, 8607 + ... + 11690.

It is an arithmetic number, because the mean of its divisors is an integer number (3927663).

Almost surely, 2^31297974 is an apocalyptic number.

31297974 is an abundant number, since it is smaller than the sum of its proper divisors (31544634).

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

31297974 is a wasteful number, since it uses less digits than its factorization.

31297974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20559.

The product of its digits is 95256, while the sum is 42.

The square root of 31297974 is about 5594.4592231958. The cubic root of 31297974 is about 315.1413626031.

The spelling of 31297974 in words is "thirty-one million, two hundred ninety-seven thousand, nine hundred seventy-four".