131881959 has 16 divisors (see below), whose sum is σ = 213143040. Its totient is φ = 79928280.

The previous prime is 131881957. The next prime is 131881969. The reversal of 131881959 is 959188131.

It is not a de Polignac number, because 131881959 - 2¹ = 131881957 is a prime.

It is a super-2 number, since 2×131881959² = 34785702219355362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131881957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221727 + ... + 222320.

It is an arithmetic number, because the mean of its divisors is an integer number (13321440).

Almost surely, 2^131881959 is an apocalyptic number.

131881959 is a deficient number, since it is larger than the sum of its proper divisors (81261081).

131881959 is a wasteful number, since it uses less digits than its factorization.

131881959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444067 (or 444061 counting only the distinct ones).

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

The square root of 131881959 is about 11483.9870689582. The cubic root of 131881959 is about 509.0125182996.

The spelling of 131881959 in words is "one hundred thirty-one million, eight hundred eighty-one thousand, nine hundred fifty-nine".