2207312609 has 4 divisors (see below), whose sum is σ = 2211533616. Its totient is φ = 2203091604.

The previous prime is 2207312581. The next prime is 2207312687. The reversal of 2207312609 is 9062137022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2207312609 - 2²⁰ = 2206264033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2207312509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2109719 + ... + 2110764.

It is an arithmetic number, because the mean of its divisors is an integer number (552883404).

Almost surely, 2^2207312609 is an apocalyptic number.

It is an amenable number.

2207312609 is a deficient number, since it is larger than the sum of its proper divisors (4221007).

2207312609 is an equidigital number, since it uses as much as digits as its factorization.

2207312609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4221006.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 2207312609 is about 46982.0456025491. The cubic root of 2207312609 is about 1302.0308708721.

The spelling of 2207312609 in words is "two billion, two hundred seven million, three hundred twelve thousand, six hundred nine".