131372317531 has 16 divisors (see below), whose sum is σ = 161718859008. Its totient is φ = 103923741600.

The previous prime is 131372317523. The next prime is 131372317541. The reversal of 131372317531 is 135713273131.

It is a happy number.

It is not a de Polignac number, because 131372317531 - 2³ = 131372317523 is a prime.

It is a super-2 number, since 2×131372317531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131372317541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372816 + ... + 633826.

It is an arithmetic number, because the mean of its divisors is an integer number (10107428688).

Almost surely, 2^131372317531 is an apocalyptic number.

131372317531 is a deficient number, since it is larger than the sum of its proper divisors (30346541477).

131372317531 is a wasteful number, since it uses less digits than its factorization.

131372317531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266562.

The product of its digits is 39690, while the sum is 37.

The spelling of 131372317531 in words is "one hundred thirty-one billion, three hundred seventy-two million, three hundred seventeen thousand, five hundred thirty-one".