23649631 has 2 divisors, whose sum is σ = 23649632. Its totient is φ = 23649630.

The previous prime is 23649611. The next prime is 23649679. The reversal of 23649631 is 13694632.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23649631 - 2⁷ = 23649503 is a prime.

It is a super-2 number, since 2×23649631² = 1118610092872322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23649611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11824815 + 11824816.

It is an arithmetic number, because the mean of its divisors is an integer number (11824816).

Almost surely, 2^23649631 is an apocalyptic number.

23649631 is a deficient number, since it is larger than the sum of its proper divisors (1).

23649631 is an equidigital number, since it uses as much as digits as its factorization.

23649631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 34.

The square root of 23649631 is about 4863.0886276111. The cubic root of 23649631 is about 287.0393621626.

The spelling of 23649631 in words is "twenty-three million, six hundred forty-nine thousand, six hundred thirty-one".