23555602531 has 6 divisors (see below), whose sum is σ = 24144143996. Its totient is φ = 22981074000.

The previous prime is 23555602453. The next prime is 23555602541. The reversal of 23555602531 is 13520655532.

It is not a de Polignac number, because 23555602531 - 2¹⁹ = 23555078243 is a prime.

It is a super-2 number, since 2×23555602531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23555602541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7004745 + ... + 7008106.

Almost surely, 2^23555602531 is an apocalyptic number.

23555602531 is a deficient number, since it is larger than the sum of its proper divisors (588541465).

23555602531 is an equidigital number, since it uses as much as digits as its factorization.

23555602531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14012933 (or 14012892 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 37.

The spelling of 23555602531 in words is "twenty-three billion, five hundred fifty-five million, six hundred two thousand, five hundred thirty-one".