972575231 has 4 divisors (see below), whose sum is σ = 972936432. Its totient is φ = 972214032.

The previous prime is 972575209. The next prime is 972575237. The reversal of 972575231 is 132575279.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972575231 is a prime.

It is a super-2 number, since 2×972575231² = 1891805159909406722, 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 (972575237) 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, 176531 + ... + 181956.

It is an arithmetic number, because the mean of its divisors is an integer number (243234108).

Almost surely, 2^972575231 is an apocalyptic number.

972575231 is a deficient number, since it is larger than the sum of its proper divisors (361201).

972575231 is a wasteful number, since it uses less digits than its factorization.

972575231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361200.

The product of its digits is 132300, while the sum is 41.

The square root of 972575231 is about 31186.1384432251. The cubic root of 972575231 is about 990.7735446635.

The spelling of 972575231 in words is "nine hundred seventy-two million, five hundred seventy-five thousand, two hundred thirty-one".