23113210531 has 4 divisors (see below), whose sum is σ = 24118132752. Its totient is φ = 22108288312.

The previous prime is 23113210513. The next prime is 23113210553. The reversal of 23113210531 is 13501231132.

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 23113210531 - 2⁹ = 23113210019 is a prime.

It is a super-2 number, since 2×23113210531² (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 (23113210031) 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, 502461076 + ... + 502461121.

It is an arithmetic number, because the mean of its divisors is an integer number (6029533188).

Almost surely, 2^23113210531 is an apocalyptic number.

23113210531 is a deficient number, since it is larger than the sum of its proper divisors (1004922221).

23113210531 is a wasteful number, since it uses less digits than its factorization.

23113210531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004922220.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 23113210531 its reverse (13501231132), we get a palindrome (36614441663).

The spelling of 23113210531 in words is "twenty-three billion, one hundred thirteen million, two hundred ten thousand, five hundred thirty-one".