204403231 has 8 divisors (see below), whose sum is σ = 215249760. Its totient is φ = 193720032.

The previous prime is 204403217. The next prime is 204403247. The reversal of 204403231 is 132304402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-204403231 is a prime.

It is a super-2 number, since 2×204403231² = 83561361686478722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204403199 and 204403208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204403201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38260 + ... + 43273.

It is an arithmetic number, because the mean of its divisors is an integer number (26906220).

Almost surely, 2^204403231 is an apocalyptic number.

204403231 is a deficient number, since it is larger than the sum of its proper divisors (10846529).

204403231 is a wasteful number, since it uses less digits than its factorization.

204403231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81665.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 204403231 is about 14296.9657969794. The cubic root of 204403231 is about 589.0641401840.

Adding to 204403231 its reverse (132304402), we get a palindrome (336707633).

The spelling of 204403231 in words is "two hundred four million, four hundred three thousand, two hundred thirty-one".