204023313 has 16 divisors (see below), whose sum is σ = 325507840. Its totient is φ = 125552592.

The previous prime is 204023299. The next prime is 204023329. The reversal of 204023313 is 313320402.

It is not a de Polignac number, because 204023313 - 2¹⁰ = 204022289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204023353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290281 + ... + 290982.

It is an arithmetic number, because the mean of its divisors is an integer number (20344240).

Almost surely, 2^204023313 is an apocalyptic number.

It is an amenable number.

204023313 is a deficient number, since it is larger than the sum of its proper divisors (121484527).

204023313 is a wasteful number, since it uses less digits than its factorization.

204023313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581285 (or 581279 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 204023313 is about 14283.6729520106. The cubic root of 204023313 is about 588.6989553701.

Adding to 204023313 its reverse (313320402), we get a palindrome (517343715).

The spelling of 204023313 in words is "two hundred four million, twenty-three thousand, three hundred thirteen".