131324239 has 2 divisors, whose sum is σ = 131324240. Its totient is φ = 131324238.

The previous prime is 131324233. The next prime is 131324243. The reversal of 131324239 is 932423131.

It is a strong prime.

It is an emirp because it is prime and its reverse (932423131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131324239 - 2⁷ = 131324111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131324233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65662119 + 65662120.

It is an arithmetic number, because the mean of its divisors is an integer number (65662120).

Almost surely, 2^131324239 is an apocalyptic number.

131324239 is a deficient number, since it is larger than the sum of its proper divisors (1).

131324239 is an equidigital number, since it uses as much as digits as its factorization.

131324239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 131324239 is about 11459.6788349412. The cubic root of 131324239 is about 508.2939778066.

It can be divided in two parts, 13132 and 4239, that added together give a palindrome (17371).

The spelling of 131324239 in words is "one hundred thirty-one million, three hundred twenty-four thousand, two hundred thirty-nine".