204231231 has 24 divisors (see below), whose sum is σ = 303750720. Its totient is φ = 132134976.

The previous prime is 204231187. The next prime is 204231239. The reversal of 204231231 is 132132402.

204231231 is a `hidden beast` number, since 204 + 231 + 231 = 666.

204231231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204231231 - 2¹¹ = 204229183 is a prime.

It is a super-2 number, since 2×204231231² = 83420791431550722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204231239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239001 + ... + 239853.

It is an arithmetic number, because the mean of its divisors is an integer number (12656280).

Almost surely, 2^204231231 is an apocalyptic number.

204231231 is a deficient number, since it is larger than the sum of its proper divisors (99519489).

204231231 is a wasteful number, since it uses less digits than its factorization.

204231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 204231231 is about 14290.9492686805. The cubic root of 204231231 is about 588.8988664356.

Adding to 204231231 its reverse (132132402), we get a palindrome (336363633).

The spelling of 204231231 in words is "two hundred four million, two hundred thirty-one thousand, two hundred thirty-one".