113123140431 has 24 divisors (see below), whose sum is σ = 175576890240. Its totient is φ = 64597366512.

The previous prime is 113123140423. The next prime is 113123140447. The reversal of 113123140431 is 134041321311.

It is a happy number.

It is not a de Polignac number, because 113123140431 - 2³ = 113123140423 is a prime.

It is a super-2 number, since 2×113123140431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113123140411) 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 23 ways as a sum of consecutive naturals, for example, 49251 + ... + 478196.

It is an arithmetic number, because the mean of its divisors is an integer number (7315703760).

Almost surely, 2^113123140431 is an apocalyptic number.

113123140431 is a deficient number, since it is larger than the sum of its proper divisors (62453749809).

113123140431 is a wasteful number, since it uses less digits than its factorization.

113123140431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528923 (or 528916 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 113123140431 its reverse (134041321311), we get a palindrome (247164461742).

The spelling of 113123140431 in words is "one hundred thirteen billion, one hundred twenty-three million, one hundred forty thousand, four hundred thirty-one".