204004311 has 16 divisors (see below), whose sum is σ = 327225600. Its totient is φ = 110438208.

The previous prime is 204004303. The next prime is 204004321. The reversal of 204004311 is 113400402.

It is not a de Polignac number, because 204004311 - 2³ = 204004303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204004321) 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, 255246 + ... + 256043.

It is an arithmetic number, because the mean of its divisors is an integer number (20451600).

Almost surely, 2^204004311 is an apocalyptic number.

204004311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

204004311 is a deficient number, since it is larger than the sum of its proper divisors (123221289).

204004311 is a wasteful number, since it uses less digits than its factorization.

204004311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511318.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 204004311 is about 14283.0077714745. The cubic root of 204004311 is about 588.6806783659.

Adding to 204004311 its reverse (113400402), we get a palindrome (317404713).

The spelling of 204004311 in words is "two hundred four million, four thousand, three hundred eleven".