131561589 has 16 divisors (see below), whose sum is σ = 186150528. Its totient is φ = 82363392.

The previous prime is 131561581. The next prime is 131561609. The reversal of 131561589 is 985165131.

It is not a de Polignac number, because 131561589 - 2³ = 131561581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131561581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22189 + ... + 27485.

It is an arithmetic number, because the mean of its divisors is an integer number (11634408).

Almost surely, 2^131561589 is an apocalyptic number.

It is an amenable number.

131561589 is a deficient number, since it is larger than the sum of its proper divisors (54588939).

131561589 is a wasteful number, since it uses less digits than its factorization.

131561589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5804.

The product of its digits is 32400, while the sum is 39.

The square root of 131561589 is about 11470.0300348343. The cubic root of 131561589 is about 508.6000166799.

The spelling of 131561589 in words is "one hundred thirty-one million, five hundred sixty-one thousand, five hundred eighty-nine".