204220311 has 8 divisors (see below), whose sum is σ = 278087424. Its totient is φ = 133250040.

The previous prime is 204220297. The next prime is 204220319. The reversal of 204220311 is 113022402.

204220311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 204220311 - 2¹⁰ = 204219287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204220319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724045 + ... + 724326.

It is an arithmetic number, because the mean of its divisors is an integer number (34760928).

Almost surely, 2^204220311 is an apocalyptic number.

204220311 is a deficient number, since it is larger than the sum of its proper divisors (73867113).

204220311 is a wasteful number, since it uses less digits than its factorization.

204220311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448421.

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

The square root of 204220311 is about 14290.5672035787. The cubic root of 204220311 is about 588.8883703422. Note that the first 3 decimals are identical.

Adding to 204220311 its reverse (113022402), we get a palindrome (317242713).

The spelling of 204220311 in words is "two hundred four million, two hundred twenty thousand, three hundred eleven".