2320220209 has 2 divisors, whose sum is σ = 2320220210. Its totient is φ = 2320220208.

The previous prime is 2320220191. The next prime is 2320220233. The reversal of 2320220209 is 9020220232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2275290000 + 44930209 = 47700^2 + 6703^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320220209 - 2³¹ = 172736561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2320220209.

It is not a weakly prime, because it can be changed into another prime (2320220239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160110104 + 1160110105.

It is an arithmetic number, because the mean of its divisors is an integer number (1160110105).

Almost surely, 2^2320220209 is an apocalyptic number.

It is an amenable number.

2320220209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2320220209 is an equidigital number, since it uses as much as digits as its factorization.

2320220209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2320220209 is about 48168.6641811873. The cubic root of 2320220209 is about 1323.8630729555.

The spelling of 2320220209 in words is "two billion, three hundred twenty million, two hundred twenty thousand, two hundred nine".