131303239 has 2 divisors, whose sum is σ = 131303240. Its totient is φ = 131303238.

The previous prime is 131303203. The next prime is 131303273. The reversal of 131303239 is 932303131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131303239 is a prime.

It is a super-2 number, since 2×131303239² = 34481081143782242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131309239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65651619 + 65651620.

It is an arithmetic number, because the mean of its divisors is an integer number (65651620).

Almost surely, 2^131303239 is an apocalyptic number.

131303239 is a deficient number, since it is larger than the sum of its proper divisors (1).

131303239 is an equidigital number, since it uses as much as digits as its factorization.

131303239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 131303239 is about 11458.7625422643. The cubic root of 131303239 is about 508.2668826751.

The spelling of 131303239 in words is "one hundred thirty-one million, three hundred three thousand, two hundred thirty-nine".