12013423423 has 2 divisors, whose sum is σ = 12013423424. Its totient is φ = 12013423422.

The previous prime is 12013423399. The next prime is 12013423427. The reversal of 12013423423 is 32432431021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12013423423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12013423427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006711711 + 6006711712.

It is an arithmetic number, because the mean of its divisors is an integer number (6006711712).

Almost surely, 2^12013423423 is an apocalyptic number.

12013423423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013423423 is an equidigital number, since it uses as much as digits as its factorization.

12013423423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 12013423423 its reverse (32432431021), we get a palindrome (44445854444).

The spelling of 12013423423 in words is "twelve billion, thirteen million, four hundred twenty-three thousand, four hundred twenty-three".