31074931 has 6 divisors (see below), whose sum is σ = 31938900. Its totient is φ = 30233736.

The previous prime is 31074893. The next prime is 31074941. The reversal of 31074931 is 13947013.

It is not a de Polignac number, because 31074931 - 2¹⁵ = 31042163 is a prime.

It is a super-2 number, since 2×31074931² = 1931302673309522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31074931.

It is not an unprimeable number, because it can be changed into a prime (31074941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9981 + ... + 12718.

It is an arithmetic number, because the mean of its divisors is an integer number (5323150).

Almost surely, 2^31074931 is an apocalyptic number.

31074931 is a deficient number, since it is larger than the sum of its proper divisors (863969).

31074931 is an equidigital number, since it uses as much as digits as its factorization.

31074931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22773 (or 22736 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 31074931 is about 5574.4893039632. The cubic root of 31074931 is about 314.3909656633.

The spelling of 31074931 in words is "thirty-one million, seventy-four thousand, nine hundred thirty-one".