315919 has 4 divisors (see below), whose sum is σ = 321160. Its totient is φ = 310680.

The previous prime is 315907. The next prime is 315937. The reversal of 315919 is 919513.

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 315919 - 2⁹ = 315407 is a prime.

It is a super-2 number, since 2×315919² = 199609629122, which contains 22 as substring.

It is a Duffinian number.

315919 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315949) 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, 2529 + ... + 2650.

It is an arithmetic number, because the mean of its divisors is an integer number (80290).

2³¹⁵⁹¹⁹ is an apocalyptic number.

315919 is a deficient number, since it is larger than the sum of its proper divisors (5241).

315919 is an equidigital number, since it uses as much as digits as its factorization.

315919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5240.

The product of its digits is 1215, while the sum is 28.

The square root of 315919 is about 562.0667220179. The cubic root of 315919 is about 68.1070258111.

The spelling of 315919 in words is "three hundred fifteen thousand, nine hundred nineteen".