204320315 has 8 divisors (see below), whose sum is σ = 247712640. Its totient is φ = 161770752.

The previous prime is 204320279. The next prime is 204320317. The reversal of 204320315 is 513023402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204320315 - 2⁶ = 204320251 is a prime.

It is a super-2 number, since 2×204320315² = 83493582243398450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204320317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210155 + ... + 211124.

It is an arithmetic number, because the mean of its divisors is an integer number (30964080).

Almost surely, 2^204320315 is an apocalyptic number.

204320315 is a deficient number, since it is larger than the sum of its proper divisors (43392325).

204320315 is an equidigital number, since it uses as much as digits as its factorization.

204320315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421381.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 204320315 is about 14294.0657267273. The cubic root of 204320315 is about 588.9844782859.

Adding to 204320315 its reverse (513023402), we get a palindrome (717343717).

The spelling of 204320315 in words is "two hundred four million, three hundred twenty thousand, three hundred fifteen".