316194491 has 2 divisors, whose sum is σ = 316194492. Its totient is φ = 316194490.

The previous prime is 316194479. The next prime is 316194497. The reversal of 316194491 is 194491613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 316194491 - 2²² = 312000187 is a prime.

It is a super-2 number, since 2×316194491² = 199957912277498162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (316194497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158097245 + 158097246.

It is an arithmetic number, because the mean of its divisors is an integer number (158097246).

Almost surely, 2^316194491 is an apocalyptic number.

316194491 is a deficient number, since it is larger than the sum of its proper divisors (1).

316194491 is an equidigital number, since it uses as much as digits as its factorization.

316194491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 316194491 is about 17781.8584799227. The cubic root of 316194491 is about 681.2681719362.

The spelling of 316194491 in words is "three hundred sixteen million, one hundred ninety-four thousand, four hundred ninety-one".