315853 has 4 divisors (see below), whose sum is σ = 317340. Its totient is φ = 314368.

The previous prime is 315851. The next prime is 315857. The reversal of 315853 is 358513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 358513 = 17 ⋅21089.

It can be written as a sum of positive squares in 2 ways, for example, as 311364 + 4489 = 558^2 + 67^2 .

It is a cyclic number.

It is not a de Polignac number, because 315853 - 2¹ = 315851 is a prime.

It is a Duffinian number.

315853 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315851) 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, 358 + ... + 871.

It is an arithmetic number, because the mean of its divisors is an integer number (79335).

2³¹⁵⁸⁵³ is an apocalyptic number.

It is an amenable number.

315853 is a deficient number, since it is larger than the sum of its proper divisors (1487).

315853 is a wasteful number, since it uses less digits than its factorization.

315853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486.

The product of its digits is 1800, while the sum is 25.

The square root of 315853 is about 562.0080070604. The cubic root of 315853 is about 68.1022826366.

The spelling of 315853 in words is "three hundred fifteen thousand, eight hundred fifty-three".