131507664171 has 24 divisors (see below), whose sum is σ = 199862176320. Its totient is φ = 76668430176.

The previous prime is 131507664161. The next prime is 131507664191. The reversal of 131507664171 is 171466705131.

It is not a de Polignac number, because 131507664171 - 2⁶ = 131507664107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131507664161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6816261 + ... + 6835526.

It is an arithmetic number, because the mean of its divisors is an integer number (8327590680).

Almost surely, 2^131507664171 is an apocalyptic number.

131507664171 is a deficient number, since it is larger than the sum of its proper divisors (68354512149).

131507664171 is a wasteful number, since it uses less digits than its factorization.

131507664171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13651835 (or 13651822 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

It can be divided in two parts, 13150 and 7664171, that added together give a triangular number (7677321 = T₃₉₁₈).

The spelling of 131507664171 in words is "one hundred thirty-one billion, five hundred seven million, six hundred sixty-four thousand, one hundred seventy-one".