204017231 has 16 divisors (see below), whose sum is σ = 241843200. Its totient is φ = 170035200.

The previous prime is 204017213. The next prime is 204017239. The reversal of 204017231 is 132710402.

It is a cyclic number.

It is not a de Polignac number, because 204017231 - 2⁶ = 204017167 is a prime.

It is a super-2 number, since 2×204017231² = 83246061089814722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204017239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9266 + ... + 22223.

It is an arithmetic number, because the mean of its divisors is an integer number (15115200).

Almost surely, 2^204017231 is an apocalyptic number.

204017231 is a deficient number, since it is larger than the sum of its proper divisors (37825969).

204017231 is a wasteful number, since it uses less digits than its factorization.

204017231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31550.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 204017231 is about 14283.4600500019. The cubic root of 204017231 is about 588.6931055441.

Adding to 204017231 its reverse (132710402), we get a palindrome (336727633).

The spelling of 204017231 in words is "two hundred four million, seventeen thousand, two hundred thirty-one".