204401312 has 12 divisors (see below), whose sum is σ = 402415146. Its totient is φ = 102200640.

The previous prime is 204401303. The next prime is 204401333. The reversal of 204401312 is 213104402.

It can be written as a sum of positive squares in only one way, i.e., 193877776 + 10523536 = 13924^2 + 3244^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3193739 + ... + 3193802.

Almost surely, 2^204401312 is an apocalyptic number.

It is an amenable number.

204401312 is a deficient number, since it is larger than the sum of its proper divisors (198013834).

204401312 is an equidigital number, since it uses as much as digits as its factorization.

204401312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6387551 (or 6387543 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 204401312 is about 14296.8986846798. The cubic root of 204401312 is about 589.0622967402.

Adding to 204401312 its reverse (213104402), we get a palindrome (417505714).

The spelling of 204401312 in words is "two hundred four million, four hundred one thousand, three hundred twelve".