204404311 has 8 divisors (see below), whose sum is σ = 221707584. Its totient is φ = 187687680.

The previous prime is 204404303. The next prime is 204404339. The reversal of 204404311 is 113404402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204404311 - 2³ = 204404303 is a prime.

It is a super-3 number, since 3×204404311³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204404371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145935 + ... + 147328.

It is an arithmetic number, because the mean of its divisors is an integer number (27713448).

Almost surely, 2^204404311 is an apocalyptic number.

204404311 is a deficient number, since it is larger than the sum of its proper divisors (17303273).

204404311 is a wasteful number, since it uses less digits than its factorization.

204404311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293321.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 204404311 is about 14297.0035671815. The cubic root of 204404311 is about 589.0651776565.

Adding to 204404311 its reverse (113404402), we get a palindrome (317808713).

Subtracting from 204404311 its reverse (113404402), we obtain a palindrome (90999909).

The spelling of 204404311 in words is "two hundred four million, four hundred four thousand, three hundred eleven".