12243420343 has 16 divisors (see below), whose sum is σ = 15552539136. Its totient is φ = 9360318240.

The previous prime is 12243420311. The next prime is 12243420407. The reversal of 12243420343 is 34302434221.

It is not a de Polignac number, because 12243420343 - 2⁵ = 12243420311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243400343) 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 15 ways as a sum of consecutive naturals, for example, 1495971 + ... + 1504132.

It is an arithmetic number, because the mean of its divisors is an integer number (972033696).

Almost surely, 2^12243420343 is an apocalyptic number.

12243420343 is a deficient number, since it is larger than the sum of its proper divisors (3309118793).

12243420343 is a wasteful number, since it uses less digits than its factorization.

12243420343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000174.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 12243420343 its reverse (34302434221), we get a palindrome (46545854564).

The spelling of 12243420343 in words is "twelve billion, two hundred forty-three million, four hundred twenty thousand, three hundred forty-three".