131103239 has 2 divisors, whose sum is σ = 131103240. Its totient is φ = 131103238.

The previous prime is 131103149. The next prime is 131103283. The reversal of 131103239 is 932301131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131103239 is a prime.

It is a super-2 number, since 2×131103239² = 34376118552582242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131103299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65551619 + 65551620.

It is an arithmetic number, because the mean of its divisors is an integer number (65551620).

Almost surely, 2^131103239 is an apocalyptic number.

131103239 is a deficient number, since it is larger than the sum of its proper divisors (1).

131103239 is an equidigital number, since it uses as much as digits as its factorization.

131103239 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 131103239 is about 11450.0322706969. The cubic root of 131103239 is about 508.0086889104.

The spelling of 131103239 in words is "one hundred thirty-one million, one hundred three thousand, two hundred thirty-nine".