23861620431 has 24 divisors (see below), whose sum is σ = 38129719680. Its totient is φ = 14257899600.

The previous prime is 23861620403. The next prime is 23861620477. The reversal of 23861620431 is 13402616832.

23861620431 is a `hidden beast` number, since 2 + 3 + 8 + 616 + 2 + 0 + 4 + 31 = 666.

It is not a de Polignac number, because 23861620431 - 2⁵ = 23861620399 is a prime.

It is a super-2 number, since 2×23861620431² (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 (23861620481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1690341 + ... + 1704398.

It is an arithmetic number, because the mean of its divisors is an integer number (1588738320).

Almost surely, 2^23861620431 is an apocalyptic number.

23861620431 is a deficient number, since it is larger than the sum of its proper divisors (14268099249).

23861620431 is a wasteful number, since it uses less digits than its factorization.

23861620431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394827 (or 3394824 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 23861620431 in words is "twenty-three billion, eight hundred sixty-one million, six hundred twenty thousand, four hundred thirty-one".