204413111 has 16 divisors (see below), whose sum is σ = 238310400. Its totient is φ = 171708768.

The previous prime is 204413107. The next prime is 204413113. The reversal of 204413111 is 111314402.

It is a happy number.

It is not a de Polignac number, because 204413111 - 2² = 204413107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204413111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204413113) 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, 190685 + ... + 191753.

It is an arithmetic number, because the mean of its divisors is an integer number (14894400).

Almost surely, 2^204413111 is an apocalyptic number.

204413111 is a deficient number, since it is larger than the sum of its proper divisors (33897289).

204413111 is a wasteful number, since it uses less digits than its factorization.

204413111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 204413111 is about 14297.3113206645. The cubic root of 204413111 is about 589.0736309993.

Adding to 204413111 its reverse (111314402), we get a palindrome (315727513).

The spelling of 204413111 in words is "two hundred four million, four hundred thirteen thousand, one hundred eleven".