12320313209 has 4 divisors (see below), whose sum is σ = 12346695504. Its totient is φ = 12293930916.

The previous prime is 12320313197. The next prime is 12320313221. The reversal of 12320313209 is 90231302321.

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 an interprime number because it is at equal distance from previous prime (12320313197) and next prime (12320313221).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12320313209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12320315209) 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, 13190447 + ... + 13191380.

It is an arithmetic number, because the mean of its divisors is an integer number (3086673876).

Almost surely, 2^12320313209 is an apocalyptic number.

It is an amenable number.

12320313209 is a deficient number, since it is larger than the sum of its proper divisors (26382295).

12320313209 is an equidigital number, since it uses as much as digits as its factorization.

12320313209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26382294.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 12320313209 in words is "twelve billion, three hundred twenty million, three hundred thirteen thousand, two hundred nine".