131857589 has 2 divisors, whose sum is σ = 131857590. Its totient is φ = 131857588.

The previous prime is 131857573. The next prime is 131857591. The reversal of 131857589 is 985758131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89151364 + 42706225 = 9442^2 + 6535^2 .

It is a cyclic number.

It is not a de Polignac number, because 131857589 - 2⁴ = 131857573 is a prime.

Together with 131857591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131851589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65928794 + 65928795.

It is an arithmetic number, because the mean of its divisors is an integer number (65928795).

Almost surely, 2^131857589 is an apocalyptic number.

It is an amenable number.

131857589 is a deficient number, since it is larger than the sum of its proper divisors (1).

131857589 is an equidigital number, since it uses as much as digits as its factorization.

131857589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 47.

The square root of 131857589 is about 11482.9259772934. The cubic root of 131857589 is about 508.9811634948.

The spelling of 131857589 in words is "one hundred thirty-one million, eight hundred fifty-seven thousand, five hundred eighty-nine".