123130113131 has 16 divisors (see below), whose sum is σ = 127853341056. Its totient is φ = 118497600000.

The previous prime is 123130113097. The next prime is 123130113143. The reversal of 123130113131 is 131311031321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123130113131 is a prime.

It is a super-2 number, since 2×123130113131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123130113151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1067351 + ... + 1177071.

It is an arithmetic number, because the mean of its divisors is an integer number (7990833816).

Almost surely, 2^123130113131 is an apocalyptic number.

123130113131 is a deficient number, since it is larger than the sum of its proper divisors (4723227925).

123130113131 is a wasteful number, since it uses less digits than its factorization.

123130113131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110134.

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

Adding to 123130113131 its reverse (131311031321), we get a palindrome (254441144452).

The spelling of 123130113131 in words is "one hundred twenty-three billion, one hundred thirty million, one hundred thirteen thousand, one hundred thirty-one".