123310113131 has 2 divisors, whose sum is σ = 123310113132. Its totient is φ = 123310113130.

The previous prime is 123310113119. The next prime is 123310113149. The reversal of 123310113131 is 131311013321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123310113131 - 2²⁶ = 123243004267 is a prime.

It is a super-2 number, since 2×123310113131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123310113331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61655056565 + 61655056566.

It is an arithmetic number, because the mean of its divisors is an integer number (61655056566).

Almost surely, 2^123310113131 is an apocalyptic number.

123310113131 is a deficient number, since it is larger than the sum of its proper divisors (1).

123310113131 is an equidigital number, since it uses as much as digits as its factorization.

123310113131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 123310113131 its reverse (131311013321), we get a palindrome (254621126452).

The spelling of 123310113131 in words is "one hundred twenty-three billion, three hundred ten million, one hundred thirteen thousand, one hundred thirty-one".