23887163231 has 4 divisors (see below), whose sum is σ = 23982331464. Its totient is φ = 23791995000.

The previous prime is 23887163227. The next prime is 23887163263. The reversal of 23887163231 is 13236178832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23887163231 - 2² = 23887163227 is a prime.

It is a super-2 number, since 2×23887163231² (a number of 22 digits) 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 (23887163221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47583740 + ... + 47584241.

It is an arithmetic number, because the mean of its divisors is an integer number (5995582866).

Almost surely, 2^23887163231 is an apocalyptic number.

23887163231 is a deficient number, since it is larger than the sum of its proper divisors (95168233).

23887163231 is an equidigital number, since it uses as much as digits as its factorization.

23887163231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95168232.

The product of its digits is 290304, while the sum is 44.

The spelling of 23887163231 in words is "twenty-three billion, eight hundred eighty-seven million, one hundred sixty-three thousand, two hundred thirty-one".