12318556343 has 4 divisors (see below), whose sum is σ = 12318785688. Its totient is φ = 12318327000.

The previous prime is 12318556319. The next prime is 12318556351. The reversal of 12318556343 is 34365581321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12318556343 - 2²⁶ = 12251447479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12318556343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12318556373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14093 + ... + 157593.

It is an arithmetic number, because the mean of its divisors is an integer number (3079696422).

Almost surely, 2^12318556343 is an apocalyptic number.

12318556343 is a deficient number, since it is larger than the sum of its proper divisors (229345).

12318556343 is an equidigital number, since it uses as much as digits as its factorization.

12318556343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229344.

The product of its digits is 259200, while the sum is 41.

The spelling of 12318556343 in words is "twelve billion, three hundred eighteen million, five hundred fifty-six thousand, three hundred forty-three".