204433231 has 4 divisors (see below), whose sum is σ = 204463072. Its totient is φ = 204403392.

The previous prime is 204433199. The next prime is 204433241. The reversal of 204433231 is 132334402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 204433231 - 2⁵ = 204433199 is a prime.

It is a super-2 number, since 2×204433231² = 83585891874198722, 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 (204433241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066 + ... + 20248.

It is an arithmetic number, because the mean of its divisors is an integer number (51115768).

Almost surely, 2^204433231 is an apocalyptic number.

204433231 is a deficient number, since it is larger than the sum of its proper divisors (29841).

204433231 is a wasteful number, since it uses less digits than its factorization.

204433231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29840.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 204433231 is about 14298.0149321505. The cubic root of 204433231 is about 589.0929575037.

Adding to 204433231 its reverse (132334402), we get a palindrome (336767633).

The spelling of 204433231 in words is "two hundred four million, four hundred thirty-three thousand, two hundred thirty-one".