131195889 has 16 divisors (see below), whose sum is σ = 212034240. Its totient is φ = 79512480.

The previous prime is 131195863. The next prime is 131195891. The reversal of 131195889 is 988591131.

It is not a de Polignac number, because 131195889 - 2²⁰ = 130147313 is a prime.

It is a super-2 number, since 2×131195889² = 34424722581000642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131195899) 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 15 ways as a sum of consecutive naturals, for example, 220572 + ... + 221165.

It is an arithmetic number, because the mean of its divisors is an integer number (13252140).

Almost surely, 2^131195889 is an apocalyptic number.

It is an amenable number.

131195889 is a deficient number, since it is larger than the sum of its proper divisors (80838351).

131195889 is a wasteful number, since it uses less digits than its factorization.

131195889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441757 (or 441751 counting only the distinct ones).

The product of its digits is 77760, while the sum is 45.

The square root of 131195889 is about 11454.0773962812. The cubic root of 131195889 is about 508.1283297939.

The spelling of 131195889 in words is "one hundred thirty-one million, one hundred ninety-five thousand, eight hundred eighty-nine".