315851 has 2 divisors, whose sum is σ = 315852. Its totient is φ = 315850.

The previous prime is 315829. The next prime is 315857. The reversal of 315851 is 158513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315851 - 2¹⁰ = 314827 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315851.

It is not a weakly prime, because it can be changed into another prime (315857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157925 + 157926.

It is an arithmetic number, because the mean of its divisors is an integer number (157926).

2³¹⁵⁸⁵¹ is an apocalyptic number.

315851 is a deficient number, since it is larger than the sum of its proper divisors (1).

315851 is an equidigital number, since it uses as much as digits as its factorization.

315851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 23.

The square root of 315851 is about 562.0062277235. The cubic root of 315851 is about 68.1021388938.

The spelling of 315851 in words is "three hundred fifteen thousand, eight hundred fifty-one".