22631631 has 32 divisors (see below), whose sum is σ = 34594560. Its totient is φ = 13036800.

The previous prime is 22631617. The next prime is 22631639. The reversal of 22631631 is 13613622.

It is a happy number.

It is not a de Polignac number, because 22631631 - 2⁵ = 22631599 is a prime.

It is a super-2 number, since 2×22631631² = 1024381443440322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22631639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57985 + ... + 58373.

It is an arithmetic number, because the mean of its divisors is an integer number (1081080).

Almost surely, 2^22631631 is an apocalyptic number.

22631631 is a deficient number, since it is larger than the sum of its proper divisors (11962929).

22631631 is a wasteful number, since it uses less digits than its factorization.

22631631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487.

The product of its digits is 1296, while the sum is 24.

The square root of 22631631 is about 4757.2713817902. The cubic root of 22631631 is about 282.8602697265.

Subtracting from 22631631 its reverse (13613622), we obtain a square (9018009 = 3003²).

The spelling of 22631631 in words is "twenty-two million, six hundred thirty-one thousand, six hundred thirty-one".