131130239 has 2 divisors, whose sum is σ = 131130240. Its totient is φ = 131130238.

The previous prime is 131130211. The next prime is 131130247. The reversal of 131130239 is 932031131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131130239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131138239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65565119 + 65565120.

It is an arithmetic number, because the mean of its divisors is an integer number (65565120).

Almost surely, 2^131130239 is an apocalyptic number.

131130239 is a deficient number, since it is larger than the sum of its proper divisors (1).

131130239 is an equidigital number, since it uses as much as digits as its factorization.

131130239 is an evil number, because the sum of its binary digits is even.

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

The square root of 131130239 is about 11451.2112459774. The cubic root of 131130239 is about 508.0435603934.

The spelling of 131130239 in words is "one hundred thirty-one million, one hundred thirty thousand, two hundred thirty-nine".