316289191 has 2 divisors, whose sum is σ = 316289192. Its totient is φ = 316289190.

The previous prime is 316289159. The next prime is 316289221. The reversal of 316289191 is 191982613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 316289191 - 2⁵ = 316289159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316281191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158144595 + 158144596.

It is an arithmetic number, because the mean of its divisors is an integer number (158144596).

Almost surely, 2^316289191 is an apocalyptic number.

316289191 is a deficient number, since it is larger than the sum of its proper divisors (1).

316289191 is an equidigital number, since it uses as much as digits as its factorization.

316289191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 40.

The square root of 316289191 is about 17784.5211068502. The cubic root of 316289191 is about 681.3361782403.

The spelling of 316289191 in words is "three hundred sixteen million, two hundred eighty-nine thousand, one hundred ninety-one".