12231400243 has 2 divisors, whose sum is σ = 12231400244. Its totient is φ = 12231400242.

The previous prime is 12231400241. The next prime is 12231400343. The reversal of 12231400243 is 34200413221.

12231400243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12231400243 - 2¹ = 12231400241 is a prime.

Together with 12231400241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12231400241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115700121 + 6115700122.

It is an arithmetic number, because the mean of its divisors is an integer number (6115700122).

Almost surely, 2^12231400243 is an apocalyptic number.

12231400243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231400243 is an equidigital number, since it uses as much as digits as its factorization.

12231400243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12231400243 its reverse (34200413221), we get a palindrome (46431813464).

The spelling of 12231400243 in words is "twelve billion, two hundred thirty-one million, four hundred thousand, two hundred forty-three".