12003430423 has 4 divisors (see below), whose sum is σ = 12390637888. Its totient is φ = 11616222960.

The previous prime is 12003430399. The next prime is 12003430433. The reversal of 12003430423 is 32403430021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32403430021 = 2879 ⋅11255099.

It is a cyclic number.

It is not a de Polignac number, because 12003430423 - 2⁵ = 12003430391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12003430394 and 12003430403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003430433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193603686 + ... + 193603747.

It is an arithmetic number, because the mean of its divisors is an integer number (3097659472).

Almost surely, 2^12003430423 is an apocalyptic number.

12003430423 is a deficient number, since it is larger than the sum of its proper divisors (387207465).

12003430423 is an equidigital number, since it uses as much as digits as its factorization.

12003430423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387207464.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 12003430423 its reverse (32403430021), we get a palindrome (44406860444).

The spelling of 12003430423 in words is "twelve billion, three million, four hundred thirty thousand, four hundred twenty-three".