315320329 has 2 divisors, whose sum is σ = 315320330. Its totient is φ = 315320328.

The previous prime is 315320293. The next prime is 315320339. The reversal of 315320329 is 923023513.

Together with previous prime (315320293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289918729 + 25401600 = 17027^2 + 5040^2 .

It is a cyclic number.

It is not a de Polignac number, because 315320329 - 2¹⁵ = 315287561 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 315320297 and 315320306.

It is not a weakly prime, because it can be changed into another prime (315320339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157660164 + 157660165.

It is an arithmetic number, because the mean of its divisors is an integer number (157660165).

Almost surely, 2^315320329 is an apocalyptic number.

It is an amenable number.

315320329 is a deficient number, since it is larger than the sum of its proper divisors (1).

315320329 is an equidigital number, since it uses as much as digits as its factorization.

315320329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 315320329 is about 17757.2613034781. The cubic root of 315320329 is about 680.6397734613.

The spelling of 315320329 in words is "three hundred fifteen million, three hundred twenty thousand, three hundred twenty-nine".