204423231 has 8 divisors (see below), whose sum is σ = 276632704. Its totient is φ = 134247960.

The previous prime is 204423229. The next prime is 204423239. The reversal of 204423231 is 132324402.

204423231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 204423231 - 2¹ = 204423229 is a prime.

It is a super-2 number, since 2×204423231² = 83577714744958722, 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 = 204423198 and 204423207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204423239) 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, 508315 + ... + 508716.

It is an arithmetic number, because the mean of its divisors is an integer number (34579088).

Almost surely, 2^204423231 is an apocalyptic number.

204423231 is a deficient number, since it is larger than the sum of its proper divisors (72209473).

204423231 is a wasteful number, since it uses less digits than its factorization.

204423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017101.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 204423231 is about 14297.6652289806. The cubic root of 204423231 is about 589.0833520437.

Adding to 204423231 its reverse (132324402), we get a palindrome (336747633).

The spelling of 204423231 in words is "two hundred four million, four hundred twenty-three thousand, two hundred thirty-one".