315316829 has 2 divisors, whose sum is σ = 315316830. Its totient is φ = 315316828.

The previous prime is 315316823. The next prime is 315316861. The reversal of 315316829 is 928613513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221265625 + 94051204 = 14875^2 + 9698^2 .

It is an emirp because it is prime and its reverse (928613513) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315316829 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 315316792 and 315316801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315316823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157658414 + 157658415.

It is an arithmetic number, because the mean of its divisors is an integer number (157658415).

Almost surely, 2^315316829 is an apocalyptic number.

It is an amenable number.

315316829 is a deficient number, since it is larger than the sum of its proper divisors (1).

315316829 is an equidigital number, since it uses as much as digits as its factorization.

315316829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 38.

The square root of 315316829 is about 17757.1627519714. The cubic root of 315316829 is about 680.6372551249.

The spelling of 315316829 in words is "three hundred fifteen million, three hundred sixteen thousand, eight hundred twenty-nine".