23655775231 has 4 divisors (see below), whose sum is σ = 25806300264. Its totient is φ = 21505250200.

The previous prime is 23655775229. The next prime is 23655775267. The reversal of 23655775231 is 13257755632.

It is a happy number.

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 23655775231 - 2¹ = 23655775229 is a prime.

It is a super-2 number, since 2×23655775231² (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 (23655745231) 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, 1075262500 + ... + 1075262521.

It is an arithmetic number, because the mean of its divisors is an integer number (6451575066).

Almost surely, 2^23655775231 is an apocalyptic number.

23655775231 is a deficient number, since it is larger than the sum of its proper divisors (2150525033).

23655775231 is a wasteful number, since it uses less digits than its factorization.

23655775231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150525032.

The product of its digits is 1323000, while the sum is 46.

The spelling of 23655775231 in words is "twenty-three billion, six hundred fifty-five million, seven hundred seventy-five thousand, two hundred thirty-one".