204043361 has 4 divisors (see below), whose sum is σ = 204076224. Its totient is φ = 204010500.

The previous prime is 204043349. The next prime is 204043379. The reversal of 204043361 is 163340402.

It is a happy number.

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 204043361 - 2⁶ = 204043297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204043381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3965 + ... + 20586.

It is an arithmetic number, because the mean of its divisors is an integer number (51019056).

Almost surely, 2^204043361 is an apocalyptic number.

It is an amenable number.

204043361 is a deficient number, since it is larger than the sum of its proper divisors (32863).

204043361 is an equidigital number, since it uses as much as digits as its factorization.

204043361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32862.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 204043361 is about 14284.3747150514. The cubic root of 204043361 is about 588.7182372354.

Adding to 204043361 its reverse (163340402), we get a palindrome (367383763).

The spelling of 204043361 in words is "two hundred four million, forty-three thousand, three hundred sixty-one".