12003023443 has 4 divisors (see below), whose sum is σ = 12327429520. Its totient is φ = 11678617368.

The previous prime is 12003023407. The next prime is 12003023491. The reversal of 12003023443 is 34432030021.

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: 34432030021 = 5623 ⋅6123427.

It is a cyclic number.

It is not a de Polignac number, because 12003023443 - 2¹³ = 12003015251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12003023143) 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, 162202983 + ... + 162203056.

It is an arithmetic number, because the mean of its divisors is an integer number (3081857380).

Almost surely, 2^12003023443 is an apocalyptic number.

12003023443 is a deficient number, since it is larger than the sum of its proper divisors (324406077).

12003023443 is an equidigital number, since it uses as much as digits as its factorization.

12003023443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324406076.

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

Adding to 12003023443 its reverse (34432030021), we get a palindrome (46435053464).

The spelling of 12003023443 in words is "twelve billion, three million, twenty-three thousand, four hundred forty-three".