131944881 has 8 divisors (see below), whose sum is σ = 175996800. Its totient is φ = 87928112.

The previous prime is 131944843. The next prime is 131944889. The reversal of 131944881 is 188449131.

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 131944881 - 2⁶ = 131944817 is a prime.

It is a super-2 number, since 2×131944881² = 34818903244208322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131944889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1795 + ... + 16343.

It is an arithmetic number, because the mean of its divisors is an integer number (21999600).

Almost surely, 2^131944881 is an apocalyptic number.

It is an amenable number.

131944881 is a deficient number, since it is larger than the sum of its proper divisors (44051919).

131944881 is a wasteful number, since it uses less digits than its factorization.

131944881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17575.

The product of its digits is 27648, while the sum is 39.

The square root of 131944881 is about 11486.7262960340. The cubic root of 131944881 is about 509.0934568238.

The spelling of 131944881 in words is "one hundred thirty-one million, nine hundred forty-four thousand, eight hundred eighty-one".