23431550536 has 8 divisors (see below), whose sum is σ = 43934157270. Its totient is φ = 11715775264.

The previous prime is 23431550533. The next prime is 23431550689. The reversal of 23431550536 is 63505513432.

It can be written as a sum of positive squares in only one way, i.e., 20537756100 + 2893794436 = 143310^2 + 53794^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×23431550536² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23431550495 and 23431550504.

It is not an unprimeable number, because it can be changed into a prime (23431550533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1464471901 + ... + 1464471916.

Almost surely, 2^23431550536 is an apocalyptic number.

It is an amenable number.

23431550536 is a deficient number, since it is larger than the sum of its proper divisors (20502606734).

23431550536 is a wasteful number, since it uses less digits than its factorization.

23431550536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928943823 (or 2928943819 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 23431550536 in words is "twenty-three billion, four hundred thirty-one million, five hundred fifty thousand, five hundred thirty-six".