12331450543 has 4 divisors (see below), whose sum is σ = 12363151320. Its totient is φ = 12299749768.

The previous prime is 12331450511. The next prime is 12331450589. The reversal of 12331450543 is 34505413321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34505413321 = 151 ⋅228512671.

It is a cyclic number.

It is not a de Polignac number, because 12331450543 - 2⁵ = 12331450511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331450343) 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, 15849805 + ... + 15850582.

It is an arithmetic number, because the mean of its divisors is an integer number (3090787830).

Almost surely, 2^12331450543 is an apocalyptic number.

12331450543 is a deficient number, since it is larger than the sum of its proper divisors (31700777).

12331450543 is an equidigital number, since it uses as much as digits as its factorization.

12331450543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31700776.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 12331450543 its reverse (34505413321), we get a palindrome (46836863864).

The spelling of 12331450543 in words is "twelve billion, three hundred thirty-one million, four hundred fifty thousand, five hundred forty-three".