972913831 has 2 divisors, whose sum is σ = 972913832. Its totient is φ = 972913830.

The previous prime is 972913807. The next prime is 972913847. The reversal of 972913831 is 138319279.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 972913831 - 2¹¹ = 972911783 is a prime.

It is a super-2 number, since 2×972913831² = 1893122645102193122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972913801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486456915 + 486456916.

It is an arithmetic number, because the mean of its divisors is an integer number (486456916).

Almost surely, 2^972913831 is an apocalyptic number.

972913831 is a deficient number, since it is larger than the sum of its proper divisors (1).

972913831 is an equidigital number, since it uses as much as digits as its factorization.

972913831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 972913831 is about 31191.5666647253. The cubic root of 972913831 is about 990.8885098910. Note that the first 3 decimals are identical.

The spelling of 972913831 in words is "nine hundred seventy-two million, nine hundred thirteen thousand, eight hundred thirty-one".