97872931 has 8 divisors (see below), whose sum is σ = 106233344. Its totient is φ = 89631360.

The previous prime is 97872913. The next prime is 97872947. The reversal of 97872931 is 13927879.

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 97872931 - 2⁵ = 97872899 is a prime.

It is a super-2 number, since 2×97872931² = 19158221245061522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97872911) 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, 27990 + ... + 31291.

It is an arithmetic number, because the mean of its divisors is an integer number (13279168).

Almost surely, 2^97872931 is an apocalyptic number.

97872931 is a deficient number, since it is larger than the sum of its proper divisors (8360413).

97872931 is a wasteful number, since it uses less digits than its factorization.

97872931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59421.

The product of its digits is 190512, while the sum is 46.

The square root of 97872931 is about 9893.0749011619. The cubic root of 97872931 is about 460.8442765127.

The spelling of 97872931 in words is "ninety-seven million, eight hundred seventy-two thousand, nine hundred thirty-one".