131398275631 has 32 divisors (see below), whose sum is σ = 156925181952. Its totient is φ = 107687543040.

The previous prime is 131398275571. The next prime is 131398275649. The reversal of 131398275631 is 136572893131.

It is not a de Polignac number, because 131398275631 - 2¹³ = 131398267439 is a prime.

It is a super-2 number, since 2×131398275631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131398275691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3770770 + ... + 3805456.

It is an arithmetic number, because the mean of its divisors is an integer number (4903911936).

Almost surely, 2^131398275631 is an apocalyptic number.

131398275631 is a deficient number, since it is larger than the sum of its proper divisors (25526906321).

131398275631 is a wasteful number, since it uses less digits than its factorization.

131398275631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34999.

The product of its digits is 816480, while the sum is 49.

The spelling of 131398275631 in words is "one hundred thirty-one billion, three hundred ninety-eight million, two hundred seventy-five thousand, six hundred thirty-one".