204324401 has 4 divisors (see below), whose sum is σ = 211370100. Its totient is φ = 197278704.

The previous prime is 204324391. The next prime is 204324413. The reversal of 204324401 is 104423402.

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 127148176 + 77176225 = 11276^2 + 8785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204324401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204324431) 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, 3522806 + ... + 3522863.

It is an arithmetic number, because the mean of its divisors is an integer number (52842525).

Almost surely, 2^204324401 is an apocalyptic number.

It is an amenable number.

204324401 is a deficient number, since it is larger than the sum of its proper divisors (7045699).

204324401 is an equidigital number, since it uses as much as digits as its factorization.

204324401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7045698.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 204324401 is about 14294.2086524578. The cubic root of 204324401 is about 588.9884044325.

Adding to 204324401 its reverse (104423402), we get a palindrome (308747803).

Subtracting from 204324401 its reverse (104423402), we obtain a palindrome (99900999).

The spelling of 204324401 in words is "two hundred four million, three hundred twenty-four thousand, four hundred one".