23131317344742 has 24 divisors (see below), whose sum is σ = 51184191573216. Its totient is φ = 7546387218576.

The previous prime is 23131317344711. The next prime is 23131317344827. The reversal of 23131317344742 is 24744371313132.

It is a happy number.

23131317344742 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 1 + 3 + 173 + 4 + 474 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13670990493 + ... + 13670992184.

It is an arithmetic number, because the mean of its divisors is an integer number (2132674648884).

Almost surely, 2^{23131317344742} is an apocalyptic number.

23131317344742 is an abundant number, since it is smaller than the sum of its proper divisors (28052874228474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23131317344742 is a wasteful number, since it uses less digits than its factorization.

23131317344742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27341982732 (or 27341982729 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 45.

Adding to 23131317344742 its reverse (24744371313132), we get a palindrome (47875688657874).

The spelling of 23131317344742 in words is "twenty-three trillion, one hundred thirty-one billion, three hundred seventeen million, three hundred forty-four thousand, seven hundred forty-two".