315863 has 4 divisors (see below), whose sum is σ = 317328. Its totient is φ = 314400.

The previous prime is 315857. The next prime is 315881. The reversal of 315863 is 368513.

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 315863 - 2¹⁴ = 299479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338 + ... + 863.

It is an arithmetic number, because the mean of its divisors is an integer number (79332).

2³¹⁵⁸⁶³ is an apocalyptic number.

315863 is a deficient number, since it is larger than the sum of its proper divisors (1465).

315863 is a wasteful number, since it uses less digits than its factorization.

315863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464.

The product of its digits is 2160, while the sum is 26.

The square root of 315863 is about 562.0169036604. The cubic root of 315863 is about 68.1030013419.

Subtracting 315863 from its reverse (368513), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 315863 in words is "three hundred fifteen thousand, eight hundred sixty-three".