315311851 has 2 divisors, whose sum is σ = 315311852. Its totient is φ = 315311850.

The previous prime is 315311837. The next prime is 315311873. The reversal of 315311851 is 158113513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315311851 - 2⁷ = 315311723 is a prime.

It is not a weakly prime, because it can be changed into another prime (315311351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157655925 + 157655926.

It is an arithmetic number, because the mean of its divisors is an integer number (157655926).

Almost surely, 2^315311851 is an apocalyptic number.

315311851 is a deficient number, since it is larger than the sum of its proper divisors (1).

315311851 is an equidigital number, since it uses as much as digits as its factorization.

315311851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 28.

The square root of 315311851 is about 17757.0225826291. The cubic root of 315311851 is about 680.6336732989.

The spelling of 315311851 in words is "three hundred fifteen million, three hundred eleven thousand, eight hundred fifty-one".