97918031 has 4 divisors (see below), whose sum is σ = 97974912. Its totient is φ = 97861152.

The previous prime is 97918027. The next prime is 97918043. The reversal of 97918031 is 13081979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13081979 = 37 ⋅353567.

It is a cyclic number.

It is not a de Polignac number, because 97918031 - 2² = 97918027 is a prime.

It is a super-2 number, since 2×97918031² = 19175881589833922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97918081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25775 + ... + 29328.

It is an arithmetic number, because the mean of its divisors is an integer number (24493728).

Almost surely, 2^97918031 is an apocalyptic number.

97918031 is a deficient number, since it is larger than the sum of its proper divisors (56881).

97918031 is a wasteful number, since it uses less digits than its factorization.

97918031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56880.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 97918031 is about 9895.3540108477. The cubic root of 97918031 is about 460.9150515644.

The spelling of 97918031 in words is "ninety-seven million, nine hundred eighteen thousand, thirty-one".