131504125405 has 16 divisors (see below), whose sum is σ = 161306337024. Its totient is φ = 102873038400.

The previous prime is 131504125397. The next prime is 131504125471. The reversal of 131504125405 is 504521405131.

It is not a de Polignac number, because 131504125405 - 2³ = 131504125397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14755 + ... + 513055.

It is an arithmetic number, because the mean of its divisors is an integer number (10081646064).

Almost surely, 2^131504125405 is an apocalyptic number.

It is an amenable number.

131504125405 is a deficient number, since it is larger than the sum of its proper divisors (29802211619).

131504125405 is a wasteful number, since it uses less digits than its factorization.

131504125405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499476.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 131504125405 in words is "one hundred thirty-one billion, five hundred four million, one hundred twenty-five thousand, four hundred five".