12318384109 has 2 divisors, whose sum is σ = 12318384110. Its totient is φ = 12318384108.

The previous prime is 12318384079. The next prime is 12318384119. The reversal of 12318384109 is 90148381321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12221302500 + 97081609 = 110550^2 + 9853^2 .

It is an emirp because it is prime and its reverse (90148381321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12318384109 - 2⁵ = 12318384077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12318384119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159192054 + 6159192055.

It is an arithmetic number, because the mean of its divisors is an integer number (6159192055).

Almost surely, 2^12318384109 is an apocalyptic number.

It is an amenable number.

12318384109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318384109 is an equidigital number, since it uses as much as digits as its factorization.

12318384109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 12318384109 in words is "twelve billion, three hundred eighteen million, three hundred eighty-four thousand, one hundred nine".