12231440423 has 2 divisors, whose sum is σ = 12231440424. Its totient is φ = 12231440422.

The previous prime is 12231440407. The next prime is 12231440453. The reversal of 12231440423 is 32404413221.

12231440423 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 an emirp because it is prime and its reverse (32404413221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12231440423 - 2⁴ = 12231440407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12231440392 and 12231440401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12231440453) 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, 6115720211 + 6115720212.

It is an arithmetic number, because the mean of its divisors is an integer number (6115720212).

Almost surely, 2^12231440423 is an apocalyptic number.

12231440423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231440423 is an equidigital number, since it uses as much as digits as its factorization.

12231440423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 12231440423 its reverse (32404413221), we get a palindrome (44635853644).

The spelling of 12231440423 in words is "twelve billion, two hundred thirty-one million, four hundred forty thousand, four hundred twenty-three".