22972931 has 2 divisors, whose sum is σ = 22972932. Its totient is φ = 22972930.

The previous prime is 22972921. The next prime is 22972951. The reversal of 22972931 is 13927922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22972931 - 2⁶ = 22972867 is a prime.

It is a super-2 number, since 2×22972931² = 1055511117461522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 22972891 and 22972900.

It is not a weakly prime, because it can be changed into another prime (22972921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11486465 + 11486466.

It is an arithmetic number, because the mean of its divisors is an integer number (11486466).

Almost surely, 2^22972931 is an apocalyptic number.

22972931 is a deficient number, since it is larger than the sum of its proper divisors (1).

22972931 is an equidigital number, since it uses as much as digits as its factorization.

22972931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 22972931 is about 4793.0085541338. The cubic root of 22972931 is about 284.2750880506.

The spelling of 22972931 in words is "twenty-two million, nine hundred seventy-two thousand, nine hundred thirty-one".