131310239 has 2 divisors, whose sum is σ = 131310240. Its totient is φ = 131310238.

The previous prime is 131310217. The next prime is 131310241. The reversal of 131310239 is 932013131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131310239 is a prime.

Together with 131310241, 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 (131310209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65655119 + 65655120.

It is an arithmetic number, because the mean of its divisors is an integer number (65655120).

Almost surely, 2^131310239 is an apocalyptic number.

131310239 is a deficient number, since it is larger than the sum of its proper divisors (1).

131310239 is an equidigital number, since it uses as much as digits as its factorization.

131310239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 131310239 is about 11459.0679812976. The cubic root of 131310239 is about 508.2759147066.

The spelling of 131310239 in words is "one hundred thirty-one million, three hundred ten thousand, two hundred thirty-nine".