315839 has 4 divisors (see below), whose sum is σ = 326760. Its totient is φ = 304920.

The previous prime is 315829. The next prime is 315851. The reversal of 315839 is 938513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938513 = 59 ⋅15907.

It is a cyclic number.

It is not a de Polignac number, because 315839 - 2¹² = 311743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 10891 = 315839 / (3 + 1 + 5 + 8 + 3 + 9).

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315839.

It is not an unprimeable number, because it can be changed into a prime (315829) 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, 5417 + ... + 5474.

It is an arithmetic number, because the mean of its divisors is an integer number (81690).

2³¹⁵⁸³⁹ is an apocalyptic number.

315839 is a deficient number, since it is larger than the sum of its proper divisors (10921).

315839 is a wasteful number, since it uses less digits than its factorization.

315839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10920.

The product of its digits is 3240, while the sum is 29.

The square root of 315839 is about 561.9955515838. The cubic root of 315839 is about 68.1012764238.

The spelling of 315839 in words is "three hundred fifteen thousand, eight hundred thirty-nine".