204424311 has 16 divisors (see below), whose sum is σ = 335465984. Its totient is φ = 107828064.

The previous prime is 204424247. The next prime is 204424357. The reversal of 204424311 is 113424402.

It is not a de Polignac number, because 204424311 - 2⁶ = 204424247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204424361) 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, 374131 + ... + 374676.

It is an arithmetic number, because the mean of its divisors is an integer number (20966624).

Almost surely, 2^204424311 is an apocalyptic number.

204424311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

204424311 is a deficient number, since it is larger than the sum of its proper divisors (131041673).

204424311 is a wasteful number, since it uses less digits than its factorization.

204424311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748830.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 204424311 is about 14297.7029973349. The cubic root of 204424311 is about 589.0843894485.

Adding to 204424311 its reverse (113424402), we get a palindrome (317848713).

Subtracting from 204424311 its reverse (113424402), we obtain a palindrome (90999909).

It can be divided in two parts, 20442 and 4311, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 204424311 in words is "two hundred four million, four hundred twenty-four thousand, three hundred eleven".