204946321 has 4 divisors (see below), whose sum is σ = 205025392. Its totient is φ = 204867252.

The previous prime is 204946297. The next prime is 204946327. The reversal of 204946321 is 123649402.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123649402 = 2 ⋅61824701.

It is a cyclic number.

It is not a de Polignac number, because 204946321 - 2⁹ = 204945809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204946327) 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, 35511 + ... + 40876.

It is an arithmetic number, because the mean of its divisors is an integer number (51256348).

Almost surely, 2^204946321 is an apocalyptic number.

It is an amenable number.

204946321 is a deficient number, since it is larger than the sum of its proper divisors (79071).

204946321 is an equidigital number, since it uses as much as digits as its factorization.

204946321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79070.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 204946321 is about 14315.9463885557. The cubic root of 204946321 is about 589.5853842740.

The spelling of 204946321 in words is "two hundred four million, nine hundred forty-six thousand, three hundred twenty-one".