23215764231 has 12 divisors (see below), whose sum is σ = 36582416520. Its totient is φ = 14070160080.

The previous prime is 23215764223. The next prime is 23215764263. The reversal of 23215764231 is 13246751232.

23215764231 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 5 + 7 + 642 + 3 + 1 = 666.

It is not a de Polignac number, because 23215764231 - 2³ = 23215764223 is a prime.

It is a super-2 number, since 2×23215764231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23215764031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117251236 + ... + 117251433.

It is an arithmetic number, because the mean of its divisors is an integer number (3048534710).

Almost surely, 2^23215764231 is an apocalyptic number.

23215764231 is a deficient number, since it is larger than the sum of its proper divisors (13366652289).

23215764231 is a wasteful number, since it uses less digits than its factorization.

23215764231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234502686 (or 234502683 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The spelling of 23215764231 in words is "twenty-three billion, two hundred fifteen million, seven hundred sixty-four thousand, two hundred thirty-one".