23490631 has 6 divisors (see below), whose sum is σ = 24792432. Its totient is φ = 22253940.

The previous prime is 23490619. The next prime is 23490637. The reversal of 23490631 is 13609432.

It is not a de Polignac number, because 23490631 - 2⁷ = 23490503 is a prime.

It is a super-2 number, since 2×23490631² = 1103619489556322, 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 23490631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23490637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32175 + ... + 32896.

It is an arithmetic number, because the mean of its divisors is an integer number (4132072).

Almost surely, 2^23490631 is an apocalyptic number.

23490631 is a deficient number, since it is larger than the sum of its proper divisors (1301801).

23490631 is an equidigital number, since it uses as much as digits as its factorization.

23490631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65109 (or 65090 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 23490631 is about 4846.7134225163. The cubic root of 23490631 is about 286.3946456598.

The spelling of 23490631 in words is "twenty-three million, four hundred ninety thousand, six hundred thirty-one".