972687331 has 16 divisors (see below), whose sum is σ = 1213551360. Its totient is φ = 757406880.

The previous prime is 972687329. The next prime is 972687371. The reversal of 972687331 is 133786279.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 972687331 - 2¹ = 972687329 is a prime.

It is a super-2 number, since 2×972687331² = 1892241287775807122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (972687371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134065 + ... + 141133.

It is an arithmetic number, because the mean of its divisors is an integer number (75846960).

Almost surely, 2^972687331 is an apocalyptic number.

972687331 is a deficient number, since it is larger than the sum of its proper divisors (240864029).

972687331 is a wasteful number, since it uses less digits than its factorization.

972687331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8874.

The product of its digits is 381024, while the sum is 46.

The square root of 972687331 is about 31187.9356642917. The cubic root of 972687331 is about 990.8116090531.

The spelling of 972687331 in words is "nine hundred seventy-two million, six hundred eighty-seven thousand, three hundred thirty-one".