316293191 has 2 divisors, whose sum is σ = 316293192. Its totient is φ = 316293190.

The previous prime is 316293181. The next prime is 316293199. The reversal of 316293191 is 191392613.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316293191 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 (316293199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158146595 + 158146596.

It is an arithmetic number, because the mean of its divisors is an integer number (158146596).

Almost surely, 2^316293191 is an apocalyptic number.

316293191 is a deficient number, since it is larger than the sum of its proper divisors (1).

316293191 is an equidigital number, since it uses as much as digits as its factorization.

316293191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 35.

The square root of 316293191 is about 17784.6335638382. The cubic root of 316293191 is about 681.3390504359.

The spelling of 316293191 in words is "three hundred sixteen million, two hundred ninety-three thousand, one hundred ninety-one".