315829 has 2 divisors, whose sum is σ = 315830. Its totient is φ = 315828.

The previous prime is 315811. The next prime is 315851. The reversal of 315829 is 928513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178929 + 136900 = 423^2 + 370^2 .

It is an emirp because it is prime and its reverse (928513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315829 - 2⁷ = 315701 is a prime.

It is a Chen prime.

315829 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 315797 and 315806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157914 + 157915.

It is an arithmetic number, because the mean of its divisors is an integer number (157915).

2³¹⁵⁸²⁹ is an apocalyptic number.

It is an amenable number.

315829 is a deficient number, since it is larger than the sum of its proper divisors (1).

315829 is an equidigital number, since it uses as much as digits as its factorization.

315829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 28.

The square root of 315829 is about 561.9866546458. The cubic root of 315829 is about 68.1005576821.

The spelling of 315829 in words is "three hundred fifteen thousand, eight hundred twenty-nine".