22956431 has 4 divisors (see below), whose sum is σ = 23097432. Its totient is φ = 22815432.

The previous prime is 22956413. The next prime is 22956463. The reversal of 22956431 is 13465922.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22956431 - 2²² = 18762127 is a prime.

It is a super-2 number, since 2×22956431² = 1053995448515522, 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 (22956631) 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, 70256 + ... + 70581.

It is an arithmetic number, because the mean of its divisors is an integer number (5774358).

Almost surely, 2^22956431 is an apocalyptic number.

22956431 is a deficient number, since it is larger than the sum of its proper divisors (141001).

22956431 is a wasteful number, since it uses less digits than its factorization.

22956431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141000.

The product of its digits is 12960, while the sum is 32.

The square root of 22956431 is about 4791.2869878562. The cubic root of 22956431 is about 284.2070128251.

The spelling of 22956431 in words is "twenty-two million, nine hundred fifty-six thousand, four hundred thirty-one".