2315012209 has 4 divisors (see below), whose sum is σ = 2315695104. Its totient is φ = 2314329316.

The previous prime is 2315012201. The next prime is 2315012243. The reversal of 2315012209 is 9022105132.

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 2315012209 - 2³ = 2315012201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2315012201) 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, 336337 + ... + 343150.

It is an arithmetic number, because the mean of its divisors is an integer number (578923776).

Almost surely, 2^2315012209 is an apocalyptic number.

It is an amenable number.

2315012209 is a deficient number, since it is larger than the sum of its proper divisors (682895).

2315012209 is an equidigital number, since it uses as much as digits as its factorization.

2315012209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682894.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2315012209 is about 48114.5737692853. The cubic root of 2315012209 is about 1322.8718101532.

The spelling of 2315012209 in words is "two billion, three hundred fifteen million, twelve thousand, two hundred nine".