204400323 has 12 divisors (see below), whose sum is σ = 305426160. Its totient is φ = 131567856.

The previous prime is 204400319. The next prime is 204400373. The reversal of 204400323 is 323004402.

It is not a de Polignac number, because 204400323 - 2² = 204400319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204400296 and 204400305.

It is not an unprimeable number, because it can be changed into a prime (204400303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391311 + ... + 391832.

It is an arithmetic number, because the mean of its divisors is an integer number (25452180).

Almost surely, 2^204400323 is an apocalyptic number.

204400323 is a deficient number, since it is larger than the sum of its proper divisors (101025837).

204400323 is a wasteful number, since it uses less digits than its factorization.

204400323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783178 (or 783175 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 204400323 is about 14296.8640967172. The cubic root of 204400323 is about 589.0613466753.

Adding to 204400323 its reverse (323004402), we get a palindrome (527404725).

The spelling of 204400323 in words is "two hundred four million, four hundred thousand, three hundred twenty-three".