200020321 has 4 divisors (see below), whose sum is σ = 200624944. Its totient is φ = 199415700.

The previous prime is 200020319. The next prime is 200020361. The reversal of 200020321 is 123020002.

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 200020321 - 2¹ = 200020319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200020298 and 200020307.

It is not an unprimeable number, because it can be changed into a prime (200020361) 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, 301815 + ... + 302476.

It is an arithmetic number, because the mean of its divisors is an integer number (50156236).

Almost surely, 2^200020321 is an apocalyptic number.

It is an amenable number.

200020321 is a deficient number, since it is larger than the sum of its proper divisors (604623).

200020321 is an equidigital number, since it uses as much as digits as its factorization.

200020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604622.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 200020321 is about 14142.8540613272. The cubic root of 200020321 is about 584.8233532933.

Adding to 200020321 its reverse (123020002), we get a palindrome (323040323).

The spelling of 200020321 in words is "two hundred million, twenty thousand, three hundred twenty-one".