23641631 has 16 divisors (see below), whose sum is σ = 27297984. Its totient is φ = 20300544.

The previous prime is 23641627. The next prime is 23641633. The reversal of 23641631 is 13614632.

It is a cyclic number.

It is not a de Polignac number, because 23641631 - 2² = 23641627 is a prime.

It is a super-2 number, since 2×23641631² = 1117853432680322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23641631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23641633) 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, 9995 + ... + 12131.

It is an arithmetic number, because the mean of its divisors is an integer number (1706124).

Almost surely, 2^23641631 is an apocalyptic number.

23641631 is a deficient number, since it is larger than the sum of its proper divisors (3656353).

23641631 is a wasteful number, since it uses less digits than its factorization.

23641631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210.

The product of its digits is 2592, while the sum is 26.

The square root of 23641631 is about 4862.2660355024. The cubic root of 23641631 is about 287.0069927517.

The spelling of 23641631 in words is "twenty-three million, six hundred forty-one thousand, six hundred thirty-one".