2321823209 has 2 divisors, whose sum is σ = 2321823210. Its totient is φ = 2321823208.

The previous prime is 2321823191. The next prime is 2321823233. The reversal of 2321823209 is 9023281232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2167368025 + 154455184 = 46555^2 + 12428^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321823209 - 2²⁰ = 2320774633 is a prime.

It is not a weakly prime, because it can be changed into another prime (2321823109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160911604 + 1160911605.

It is an arithmetic number, because the mean of its divisors is an integer number (1160911605).

Almost surely, 2^2321823209 is an apocalyptic number.

It is an amenable number.

2321823209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321823209 is an equidigital number, since it uses as much as digits as its factorization.

2321823209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2321823209 is about 48185.3007565585. The cubic root of 2321823209 is about 1324.1678808017.

The spelling of 2321823209 in words is "two billion, three hundred twenty-one million, eight hundred twenty-three thousand, two hundred nine".