131089577 has 2 divisors, whose sum is σ = 131089578. Its totient is φ = 131089576.

The previous prime is 131089573. The next prime is 131089579. The reversal of 131089577 is 775980131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130051216 + 1038361 = 11404^2 + 1019^2 .

It is a cyclic number.

It is not a de Polignac number, because 131089577 - 2² = 131089573 is a prime.

Together with 131089579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131089573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65544788 + 65544789.

It is an arithmetic number, because the mean of its divisors is an integer number (65544789).

Almost surely, 2^131089577 is an apocalyptic number.

It is an amenable number.

131089577 is a deficient number, since it is larger than the sum of its proper divisors (1).

131089577 is an equidigital number, since it uses as much as digits as its factorization.

131089577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 41.

The square root of 131089577 is about 11449.4356629486. The cubic root of 131089577 is about 507.9910421158.

The spelling of 131089577 in words is "one hundred thirty-one million, eighty-nine thousand, five hundred seventy-seven".