131013020512123 has 96 divisors (see below), whose sum is σ = 159090091776000. Its totient is φ = 107299830435840.

The previous prime is 131013020512111. The next prime is 131013020512141. The reversal of 131013020512123 is 321215020310131.

It is a de Polignac number, because none of the positive numbers 2^k-131013020512123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131013020512163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 291023215 + ... + 291473047.

It is an arithmetic number, because the mean of its divisors is an integer number (1657188456000).

Almost surely, 2^{131013020512123} is an apocalyptic number.

131013020512123 is a deficient number, since it is larger than the sum of its proper divisors (28077071263877).

131013020512123 is a wasteful number, since it uses less digits than its factorization.

131013020512123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450005 (or 449988 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 131013020512123 its reverse (321215020310131), we get a palindrome (452228040822254).

The spelling of 131013020512123 in words is "one hundred thirty-one trillion, thirteen billion, twenty million, five hundred twelve thousand, one hundred twenty-three".