97231288 has 48 divisors (see below), whose sum is σ = 231363000. Its totient is φ = 37880640.

The previous prime is 97231261. The next prime is 97231333. The reversal of 97231288 is 88213279.

It is a super-2 number, since 2×97231288² = 18907846732277888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97231288.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6963 + ... + 15586.

Almost surely, 2^97231288 is an apocalyptic number.

97231288 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

97231288 is an abundant number, since it is smaller than the sum of its proper divisors (134131712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97231288 is a wasteful number, since it uses less digits than its factorization.

97231288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22580 (or 22569 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 97231288 is about 9860.5926799559. The cubic root of 97231288 is about 459.8349880727.

Subtracting from 97231288 its reverse (88213279), we obtain a square (9018009 = 3003²).

It can be divided in two parts, 9723 and 1288, that added together give a palindrome (11011).

The spelling of 97231288 in words is "ninety-seven million, two hundred thirty-one thousand, two hundred eighty-eight".