131371681 has 16 divisors (see below), whose sum is σ = 158515200. Its totient is φ = 106357968.

The previous prime is 131371651. The next prime is 131371697. The reversal of 131371681 is 186173131.

It is a cyclic number.

It is not a de Polignac number, because 131371681 - 2⁷ = 131371553 is a prime.

It is a super-2 number, since 2×131371681² = 34517037137531522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131371601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49650 + ... + 52228.

It is an arithmetic number, because the mean of its divisors is an integer number (9907200).

Almost surely, 2^131371681 is an apocalyptic number.

It is an amenable number.

131371681 is a deficient number, since it is larger than the sum of its proper divisors (27143519).

131371681 is a wasteful number, since it uses less digits than its factorization.

131371681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988.

The product of its digits is 3024, while the sum is 31.

The square root of 131371681 is about 11461.7486013261. The cubic root of 131371681 is about 508.3551789471.

The spelling of 131371681 in words is "one hundred thirty-one million, three hundred seventy-one thousand, six hundred eighty-one".