315847 has 4 divisors (see below), whose sum is σ = 360976. Its totient is φ = 270720.

The previous prime is 315829. The next prime is 315851. The reversal of 315847 is 748513.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 315847 - 2¹⁵ = 283079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22554 + ... + 22567.

It is an arithmetic number, because the mean of its divisors is an integer number (90244).

2³¹⁵⁸⁴⁷ is an apocalyptic number.

315847 is a deficient number, since it is larger than the sum of its proper divisors (45129).

315847 is an equidigital number, since it uses as much as digits as its factorization.

315847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45128.

The product of its digits is 3360, while the sum is 28.

The square root of 315847 is about 562.0026690328. The cubic root of 315847 is about 68.1018514062.

The spelling of 315847 in words is "three hundred fifteen thousand, eight hundred forty-seven".