31160979 has 12 divisors (see below), whose sum is σ = 45860256. Its totient is φ = 20381712.

The previous prime is 31160957. The next prime is 31160981. The reversal of 31160979 is 97906113.

It is not a de Polignac number, because 31160979 - 2⁷ = 31160851 is a prime.

It is a super-2 number, since 2×31160979² = 1942013224476882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31160879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32187 + ... + 33140.

It is an arithmetic number, because the mean of its divisors is an integer number (3821688).

Almost surely, 2^31160979 is an apocalyptic number.

31160979 is a deficient number, since it is larger than the sum of its proper divisors (14699277).

31160979 is a wasteful number, since it uses less digits than its factorization.

31160979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65386 (or 65383 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 31160979 is about 5582.2019848802. The cubic root of 31160979 is about 314.6808862005.

The spelling of 31160979 in words is "thirty-one million, one hundred sixty thousand, nine hundred seventy-nine".