12331451324503 has 4 divisors (see below), whose sum is σ = 12331659695800. Its totient is φ = 12331242953208.

The previous prime is 12331451324429. The next prime is 12331451324573. The reversal of 12331451324503 is 30542315413321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12331451324503 - 2²¹ = 12331449227351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331451324573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104096853 + ... + 104215246.

It is an arithmetic number, because the mean of its divisors is an integer number (3082914923950).

Almost surely, 2^{12331451324503} is an apocalyptic number.

12331451324503 is a deficient number, since it is larger than the sum of its proper divisors (208371297).

12331451324503 is an equidigital number, since it uses as much as digits as its factorization.

12331451324503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208371296.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 12331451324503 its reverse (30542315413321), we get a palindrome (42873766737824).

The spelling of 12331451324503 in words is "twelve trillion, three hundred thirty-one billion, four hundred fifty-one million, three hundred twenty-four thousand, five hundred three".