23131110431 has 16 divisors (see below), whose sum is σ = 27185427360. Its totient is φ = 19403281920.

The previous prime is 23131110427. The next prime is 23131110433. The reversal of 23131110431 is 13401113132.

It is not a de Polignac number, because 23131110431 - 2² = 23131110427 is a prime.

It is a super-2 number, since 2×23131110431² (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 (23131110433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360611 + ... + 419883.

It is an arithmetic number, because the mean of its divisors is an integer number (1699089210).

Almost surely, 2^23131110431 is an apocalyptic number.

23131110431 is a deficient number, since it is larger than the sum of its proper divisors (4054316929).

23131110431 is a wasteful number, since it uses less digits than its factorization.

23131110431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62026.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 23131110431 its reverse (13401113132), we get a palindrome (36532223563).

The spelling of 23131110431 in words is "twenty-three billion, one hundred thirty-one million, one hundred ten thousand, four hundred thirty-one".