131187764631 has 64 divisors (see below), whose sum is σ = 223166131200. Its totient is φ = 67954360320.

The previous prime is 131187764599. The next prime is 131187764633. The reversal of 131187764631 is 136467781131.

It is not a de Polignac number, because 131187764631 - 2⁵ = 131187764599 is a prime.

It is a super-2 number, since 2×131187764631² (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 (131187764633) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3979191 + ... + 4012023.

It is an arithmetic number, because the mean of its divisors is an integer number (3486970800).

Almost surely, 2^131187764631 is an apocalyptic number.

131187764631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131187764631 is a deficient number, since it is larger than the sum of its proper divisors (91978366569).

131187764631 is a wasteful number, since it uses less digits than its factorization.

131187764631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33221 (or 33207 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The spelling of 131187764631 in words is "one hundred thirty-one billion, one hundred eighty-seven million, seven hundred sixty-four thousand, six hundred thirty-one".