97231257 has 12 divisors (see below), whose sum is σ = 140737584. Its totient is φ = 64685880.

The previous prime is 97231249. The next prime is 97231261. The reversal of 97231257 is 75213279.

It is not a de Polignac number, because 97231257 - 2³ = 97231249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97231247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6583 + ... + 15420.

It is an arithmetic number, because the mean of its divisors is an integer number (11728132).

Almost surely, 2^97231257 is an apocalyptic number.

It is an amenable number.

97231257 is a deficient number, since it is larger than the sum of its proper divisors (43506327).

97231257 is a wasteful number, since it uses less digits than its factorization.

97231257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22500 (or 22497 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 97231257 is about 9860.5911080422. The cubic root of 97231257 is about 459.8349392034.

The spelling of 97231257 in words is "ninety-seven million, two hundred thirty-one thousand, two hundred fifty-seven".