315853691 has 2 divisors, whose sum is σ = 315853692. Its totient is φ = 315853690.

The previous prime is 315853679. The next prime is 315853711. The reversal of 315853691 is 196358513.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315853691 is a prime.

It is not a weakly prime, because it can be changed into another prime (315856691) 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, 157926845 + 157926846.

It is an arithmetic number, because the mean of its divisors is an integer number (157926846).

Almost surely, 2^315853691 is an apocalyptic number.

315853691 is a deficient number, since it is larger than the sum of its proper divisors (1).

315853691 is an equidigital number, since it uses as much as digits as its factorization.

315853691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 41.

The square root of 315853691 is about 17772.2730960336. The cubic root of 315853691 is about 681.0233229966.

The spelling of 315853691 in words is "three hundred fifteen million, eight hundred fifty-three thousand, six hundred ninety-one".