131013113123 has 4 divisors (see below), whose sum is σ = 132671507040. Its totient is φ = 129354719208.

The previous prime is 131013113093. The next prime is 131013113137. The reversal of 131013113123 is 321311310131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131013113123 - 2³⁶ = 62293636387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131013113095 and 131013113104.

It is not an unprimeable number, because it can be changed into a prime (131013113423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829196840 + ... + 829196997.

It is an arithmetic number, because the mean of its divisors is an integer number (33167876760).

Almost surely, 2^131013113123 is an apocalyptic number.

131013113123 is a deficient number, since it is larger than the sum of its proper divisors (1658393917).

131013113123 is an equidigital number, since it uses as much as digits as its factorization.

131013113123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658393916.

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

Adding to 131013113123 its reverse (321311310131), we get a palindrome (452324423254).

The spelling of 131013113123 in words is "one hundred thirty-one billion, thirteen million, one hundred thirteen thousand, one hundred twenty-three".