23631949231 has 4 divisors (see below), whose sum is σ = 25780308264. Its totient is φ = 21483590200.

The previous prime is 23631949223. The next prime is 23631949259. The reversal of 23631949231 is 13294913632.

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 23631949231 - 2³ = 23631949223 is a prime.

It is a super-2 number, since 2×23631949231² (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 (23631949261) 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, 1074179500 + ... + 1074179521.

It is an arithmetic number, because the mean of its divisors is an integer number (6445077066).

Almost surely, 2^23631949231 is an apocalyptic number.

23631949231 is a deficient number, since it is larger than the sum of its proper divisors (2148359033).

23631949231 is a wasteful number, since it uses less digits than its factorization.

23631949231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148359032.

The product of its digits is 209952, while the sum is 43.

The spelling of 23631949231 in words is "twenty-three billion, six hundred thirty-one million, nine hundred forty-nine thousand, two hundred thirty-one".