2120330309 has 2 divisors, whose sum is σ = 2120330310. Its totient is φ = 2120330308.

The previous prime is 2120330299. The next prime is 2120330323. The reversal of 2120330309 is 9030330212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1140953284 + 979377025 = 33778^2 + 31295^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120330309 - 2⁸ = 2120330053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120330609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060165154 + 1060165155.

It is an arithmetic number, because the mean of its divisors is an integer number (1060165155).

Almost surely, 2^2120330309 is an apocalyptic number.

It is an amenable number.

2120330309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120330309 is an equidigital number, since it uses as much as digits as its factorization.

2120330309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 2120330309 is about 46047.0445197083. The cubic root of 2120330309 is about 1284.6983720777.

The spelling of 2120330309 in words is "two billion, one hundred twenty million, three hundred thirty thousand, three hundred nine".