139313191 has 2 divisors, whose sum is σ = 139313192. Its totient is φ = 139313190.

The previous prime is 139313173. The next prime is 139313221. The reversal of 139313191 is 191313931.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139313191 - 2⁵ = 139313159 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 (139313131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69656595 + 69656596.

It is an arithmetic number, because the mean of its divisors is an integer number (69656596).

Almost surely, 2^139313191 is an apocalyptic number.

139313191 is a deficient number, since it is larger than the sum of its proper divisors (1).

139313191 is an equidigital number, since it uses as much as digits as its factorization.

139313191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2187, while the sum is 31.

The square root of 139313191 is about 11803.1009061178. The cubic root of 139313191 is about 518.3989103340.

The spelling of 139313191 in words is "one hundred thirty-nine million, three hundred thirteen thousand, one hundred ninety-one".