131113391 has 2 divisors, whose sum is σ = 131113392. Its totient is φ = 131113390.

The previous prime is 131113387. The next prime is 131113397. The reversal of 131113391 is 193311131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131113391 - 2² = 131113387 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131113397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65556695 + 65556696.

It is an arithmetic number, because the mean of its divisors is an integer number (65556696).

Almost surely, 2^131113391 is an apocalyptic number.

131113391 is a deficient number, since it is larger than the sum of its proper divisors (1).

131113391 is an equidigital number, since it uses as much as digits as its factorization.

131113391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243, while the sum is 23.

The square root of 131113391 is about 11450.4755796430. The cubic root of 131113391 is about 508.0218011496.

The spelling of 131113391 in words is "one hundred thirty-one million, one hundred thirteen thousand, three hundred ninety-one".