316488391 has 2 divisors, whose sum is σ = 316488392. Its totient is φ = 316488390.

The previous prime is 316488329. The next prime is 316488401. The reversal of 316488391 is 193884613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 316488391 - 2¹¹ = 316486343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316488311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158244195 + 158244196.

It is an arithmetic number, because the mean of its divisors is an integer number (158244196).

Almost surely, 2^316488391 is an apocalyptic number.

316488391 is a deficient number, since it is larger than the sum of its proper divisors (1).

316488391 is an equidigital number, since it uses as much as digits as its factorization.

316488391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 316488391 is about 17790.1206010527. The cubic root of 316488391 is about 681.4791841642.

The spelling of 316488391 in words is "three hundred sixteen million, four hundred eighty-eight thousand, three hundred ninety-one".