204144111 has 32 divisors (see below), whose sum is σ = 307243200. Its totient is φ = 133954560.

The previous prime is 204144097. The next prime is 204144119. The reversal of 204144111 is 111441402.

It is not a de Polignac number, because 204144111 - 2¹⁵ = 204111343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204144119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 846951 + ... + 847191.

It is an arithmetic number, because the mean of its divisors is an integer number (9601350).

Almost surely, 2^204144111 is an apocalyptic number.

204144111 is a deficient number, since it is larger than the sum of its proper divisors (103099089).

204144111 is a wasteful number, since it uses less digits than its factorization.

204144111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 204144111 is about 14287.9008605183. The cubic root of 204144111 is about 588.8151179547.

Adding to 204144111 its reverse (111441402), we get a palindrome (315585513).

The spelling of 204144111 in words is "two hundred four million, one hundred forty-four thousand, one hundred eleven".