131589277 has 2 divisors, whose sum is σ = 131589278. Its totient is φ = 131589276.

The previous prime is 131589253. The next prime is 131589317. The reversal of 131589277 is 772985131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115154361 + 16434916 = 10731^2 + 4054^2 .

It is a cyclic number.

It is not a de Polignac number, because 131589277 - 2⁷ = 131589149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131589217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65794638 + 65794639.

It is an arithmetic number, because the mean of its divisors is an integer number (65794639).

Almost surely, 2^131589277 is an apocalyptic number.

It is an amenable number.

131589277 is a deficient number, since it is larger than the sum of its proper divisors (1).

131589277 is an equidigital number, since it uses as much as digits as its factorization.

131589277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 43.

The square root of 131589277 is about 11471.2369428933. The cubic root of 131589277 is about 508.6356935813.

The spelling of 131589277 in words is "one hundred thirty-one million, five hundred eighty-nine thousand, two hundred seventy-seven".