200000321 has 2 divisors, whose sum is σ = 200000322. Its totient is φ = 200000320.

The previous prime is 200000299. The next prime is 200000329. The reversal of 200000321 is 123000002.

It is an a-pointer prime, because the next prime (200000329) can be obtained adding 200000321 to its sum of digits (8).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142468096 + 57532225 = 11936^2 + 7585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200000321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200000299 and 200000308.

It is not a weakly prime, because it can be changed into another prime (200000329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100000160 + 100000161.

It is an arithmetic number, because the mean of its divisors is an integer number (100000161).

Almost surely, 2^200000321 is an apocalyptic number.

It is an amenable number.

200000321 is a deficient number, since it is larger than the sum of its proper divisors (1).

200000321 is an equidigital number, since it uses as much as digits as its factorization.

200000321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 200000321 is about 14142.1469727902. The cubic root of 200000321 is about 584.8038605123.

Adding to 200000321 its reverse (123000002), we get a palindrome (323000323).

The spelling of 200000321 in words is "two hundred million, three hundred twenty-one", and thus it is an aban number.