204504313 has 4 divisors (see below), whose sum is σ = 220235428. Its totient is φ = 188773200.

The previous prime is 204504257. The next prime is 204504319. The reversal of 204504313 is 313405402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35426304 + 169078009 = 5952^2 + 13003^2 .

It is a cyclic number.

It is not a de Polignac number, because 204504313 - 2¹³ = 204496121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204504319) 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, 7865538 + ... + 7865563.

It is an arithmetic number, because the mean of its divisors is an integer number (55058857).

Almost surely, 2^204504313 is an apocalyptic number.

It is an amenable number.

204504313 is a deficient number, since it is larger than the sum of its proper divisors (15731115).

204504313 is a wasteful number, since it uses less digits than its factorization.

204504313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15731114.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 204504313 is about 14300.5004457886. The cubic root of 204504313 is about 589.1612260089.

Adding to 204504313 its reverse (313405402), we get a palindrome (517909715).

The spelling of 204504313 in words is "two hundred four million, five hundred four thousand, three hundred thirteen".