23087631 has 8 divisors (see below), whose sum is σ = 35181184. Its totient is φ = 13192920.

The previous prime is 23087629. The next prime is 23087657. The reversal of 23087631 is 13678032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23087631 - 2¹ = 23087629 is a prime.

It is a super-2 number, since 2×23087631² = 1066077410384322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23087611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549685 + ... + 549726.

It is an arithmetic number, because the mean of its divisors is an integer number (4397648).

Almost surely, 2^23087631 is an apocalyptic number.

23087631 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23087631 is a deficient number, since it is larger than the sum of its proper divisors (12093553).

23087631 is a wasteful number, since it uses less digits than its factorization.

23087631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099421.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 23087631 is about 4804.9590008657. The cubic root of 23087631 is about 284.7474154838.

The spelling of 23087631 in words is "twenty-three million, eighty-seven thousand, six hundred thirty-one".