131589239 has 2 divisors, whose sum is σ = 131589240. Its totient is φ = 131589238.

The previous prime is 131589217. The next prime is 131589247. The reversal of 131589239 is 932985131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131589239 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 131589196 and 131589205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131589439) 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 as a sum of consecutive naturals, namely, 65794619 + 65794620.

It is an arithmetic number, because the mean of its divisors is an integer number (65794620).

Almost surely, 2^131589239 is an apocalyptic number.

131589239 is a deficient number, since it is larger than the sum of its proper divisors (1).

131589239 is an equidigital number, since it uses as much as digits as its factorization.

131589239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 41.

The square root of 131589239 is about 11471.2352865766. The cubic root of 131589239 is about 508.6356446204.

The spelling of 131589239 in words is "one hundred thirty-one million, five hundred eighty-nine thousand, two hundred thirty-nine".