2000321 has 2 divisors, whose sum is σ = 2000322. Its totient is φ = 2000320.

The previous prime is 2000309. The next prime is 2000329. The reversal of 2000321 is 1230002.

It is an a-pointer prime, because the next prime (2000329) can be obtained adding 2000321 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., 1210000 + 790321 = 1100^2 + 889^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000321 - 2¹⁰ = 1999297 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2000299 and 2000308.

It is not a weakly prime, because it can be changed into another prime (2000329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000160 + 1000161.

It is an arithmetic number, because the mean of its divisors is an integer number (1000161).

2^2000321 is an apocalyptic number.

It is an amenable number.

2000321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000321 is an equidigital number, since it uses as much as digits as its factorization.

2000321 is an evil number, because the sum of its binary digits is even.

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

The square root of 2000321 is about 1414.3270484580. The cubic root of 2000321 is about 125.9988452065.

Adding to 2000321 its reverse (1230002), we get a palindrome (3230323).

The spelling of 2000321 in words is "two million, three hundred twenty-one", and thus it is an aban number.