972821882731 has 16 divisors (see below), whose sum is σ = 1030508748288. Its totient is φ = 916423992000.

The previous prime is 972821882723. The next prime is 972821882743. The reversal of 972821882731 is 137288128279.

It is a cyclic number.

It is not a de Polignac number, because 972821882731 - 2³ = 972821882723 is a prime.

It is a super-2 number, since 2×972821882731² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972821882231) 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, 6772506 + ... + 6914656.

It is an arithmetic number, because the mean of its divisors is an integer number (64406796768).

Almost surely, 2^972821882731 is an apocalyptic number.

972821882731 is a deficient number, since it is larger than the sum of its proper divisors (57686865557).

972821882731 is a wasteful number, since it uses less digits than its factorization.

972821882731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146682.

The product of its digits is 5419008, while the sum is 58.

The spelling of 972821882731 in words is "nine hundred seventy-two billion, eight hundred twenty-one million, eight hundred eighty-two thousand, seven hundred thirty-one".