315885851 has 2 divisors, whose sum is σ = 315885852. Its totient is φ = 315885850.

The previous prime is 315885827. The next prime is 315885901. The reversal of 315885851 is 158588513.

It is a weak prime.

It is an emirp because it is prime and its reverse (158588513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315885851 - 2²² = 311691547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315885751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157942925 + 157942926.

It is an arithmetic number, because the mean of its divisors is an integer number (157942926).

Almost surely, 2^315885851 is an apocalyptic number.

315885851 is a deficient number, since it is larger than the sum of its proper divisors (1).

315885851 is an equidigital number, since it uses as much as digits as its factorization.

315885851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192000, while the sum is 44.

The square root of 315885851 is about 17773.1778531584. The cubic root of 315885851 is about 681.0464359836.

The spelling of 315885851 in words is "three hundred fifteen million, eight hundred eighty-five thousand, eight hundred fifty-one".