80975931 has 8 divisors (see below), whose sum is σ = 108009744. Its totient is φ = 53963040.

The previous prime is 80975927. The next prime is 80975941. The reversal of 80975931 is 13957908.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80975931 - 2² = 80975927 is a prime.

It is a super-2 number, since 2×80975931² = 13114202802633522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80975911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11001 + ... + 16821.

It is an arithmetic number, because the mean of its divisors is an integer number (13501218).

Almost surely, 2^80975931 is an apocalyptic number.

80975931 is a deficient number, since it is larger than the sum of its proper divisors (27033813).

80975931 is a wasteful number, since it uses less digits than its factorization.

80975931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10461.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 80975931 is about 8998.6627339844. The cubic root of 80975931 is about 432.6320106677.

It can be divided in two parts, 8097 and 5931, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 80975931 in words is "eighty million, nine hundred seventy-five thousand, nine hundred thirty-one".