99031568 has 20 divisors (see below), whose sum is σ = 193854780. Its totient is φ = 49004544.

The previous prime is 99031547. The next prime is 99031589. The reversal of 99031568 is 86513099.

It is an interprime number because it is at equal distance from previous prime (99031547) and next prime (99031589).

It can be written as a sum of positive squares in 2 ways, for example, as 15272464 + 83759104 = 3908^2 + 9152^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30353 + ... + 33456.

It is an arithmetic number, because the mean of its divisors is an integer number (9692739).

Almost surely, 2^99031568 is an apocalyptic number.

It is an amenable number.

99031568 is a deficient number, since it is larger than the sum of its proper divisors (94823212).

99031568 is a wasteful number, since it uses less digits than its factorization.

99031568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63914 (or 63908 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 99031568 is about 9951.4605963145. The cubic root of 99031568 is about 462.6556659354.

It can be divided in two parts, 99031 and 568, that added together give a palindrome (99599).

The spelling of 99031568 in words is "ninety-nine million, thirty-one thousand, five hundred sixty-eight".