22402631 has 2 divisors, whose sum is σ = 22402632. Its totient is φ = 22402630.

The previous prime is 22402619. The next prime is 22402657. The reversal of 22402631 is 13620422.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22402631 is a prime.

It is a super-2 number, since 2×22402631² = 1003755751444322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22402531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11201315 + 11201316.

It is an arithmetic number, because the mean of its divisors is an integer number (11201316).

Almost surely, 2^22402631 is an apocalyptic number.

22402631 is a deficient number, since it is larger than the sum of its proper divisors (1).

22402631 is an equidigital number, since it uses as much as digits as its factorization.

22402631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22402631 is about 4733.1417684240. The cubic root of 22402631 is about 281.9029854237.

The spelling of 22402631 in words is "twenty-two million, four hundred two thousand, six hundred thirty-one".