131580881 has 8 divisors (see below), whose sum is σ = 133487400. Its totient is φ = 129686400.

The previous prime is 131580853. The next prime is 131580919. The reversal of 131580881 is 188085131.

It can be written as a sum of positive squares in 4 ways, for example, as 117072400 + 14508481 = 10820^2 + 3809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131580881 - 2²² = 127386577 is a prime.

It is a super-2 number, since 2×131580881² = 34627056489472322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131580851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20285 + ... + 25973.

It is an arithmetic number, because the mean of its divisors is an integer number (16685925).

Almost surely, 2^131580881 is an apocalyptic number.

It is an amenable number.

131580881 is a deficient number, since it is larger than the sum of its proper divisors (1906519).

131580881 is a wasteful number, since it uses less digits than its factorization.

131580881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6019.

The product of its (nonzero) digits is 7680, while the sum is 35.

The square root of 131580881 is about 11470.8709782649. The cubic root of 131580881 is about 508.6248755870.

The spelling of 131580881 in words is "one hundred thirty-one million, five hundred eighty thousand, eight hundred eighty-one".