99231375 has 32 divisors (see below), whose sum is σ = 167491584. Its totient is φ = 52164000.

The previous prime is 99231367. The next prime is 99231383. The reversal of 99231375 is 57313299.

It is an interprime number because it is at equal distance from previous prime (99231367) and next prime (99231383).

It is not a de Polignac number, because 99231375 - 2³ = 99231367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24762 + ... + 28488.

It is an arithmetic number, because the mean of its divisors is an integer number (5234112).

Almost surely, 2^99231375 is an apocalyptic number.

99231375 is the 5325-th nonagonal number.

99231375 is a deficient number, since it is larger than the sum of its proper divisors (68260209).

99231375 is a wasteful number, since it uses less digits than its factorization.

99231375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816 (or 3806 counting only the distinct ones).

The product of its digits is 51030, while the sum is 39.

The square root of 99231375 is about 9961.4946167731. The cubic root of 99231375 is about 462.9666096799.

The spelling of 99231375 in words is "ninety-nine million, two hundred thirty-one thousand, three hundred seventy-five".