13243515424323 has 4 divisors (see below), whose sum is σ = 17658020565768. Its totient is φ = 8829010282880.

The previous prime is 13243515424301. The next prime is 13243515424339. The reversal of 13243515424323 is 32342451534231.

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 13243515424323 - 2²⁰ = 13243514375747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13243515424423) 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, 2207252570718 + ... + 2207252570723.

It is an arithmetic number, because the mean of its divisors is an integer number (4414505141442).

Almost surely, 2^{13243515424323} is an apocalyptic number.

13243515424323 is a deficient number, since it is larger than the sum of its proper divisors (4414505141445).

13243515424323 is an equidigital number, since it uses as much as digits as its factorization.

13243515424323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414505141444.

The product of its digits is 1036800, while the sum is 42.

Adding to 13243515424323 its reverse (32342451534231), we get a palindrome (45585966958554).

The spelling of 13243515424323 in words is "thirteen trillion, two hundred forty-three billion, five hundred fifteen million, four hundred twenty-four thousand, three hundred twenty-three".