204315233 has 4 divisors (see below), whose sum is σ = 213198528. Its totient is φ = 195431940.

The previous prime is 204315193. The next prime is 204315239. The reversal of 204315233 is 332513402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204315233 - 2⁸ = 204314977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 8883271 = 204315233 / (2 + 0 + 4 + 3 + 1 + 5 + 2 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204315199 and 204315208.

It is not an unprimeable number, because it can be changed into a prime (204315239) 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 3 ways as a sum of consecutive naturals, for example, 4441613 + ... + 4441658.

It is an arithmetic number, because the mean of its divisors is an integer number (53299632).

Almost surely, 2^204315233 is an apocalyptic number.

204315233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

204315233 is a deficient number, since it is larger than the sum of its proper divisors (8883295).

204315233 is an equidigital number, since it uses as much as digits as its factorization.

204315233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8883294.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 204315233 is about 14293.8879595441. The cubic root of 204315233 is about 588.9795950320.

Adding to 204315233 its reverse (332513402), we get a palindrome (536828635).

The spelling of 204315233 in words is "two hundred four million, three hundred fifteen thousand, two hundred thirty-three".