13721231522343 has 4 divisors (see below), whose sum is σ = 18294975363128. Its totient is φ = 9147487681560.

The previous prime is 13721231522333. The next prime is 13721231522423. The reversal of 13721231522343 is 34322513212731.

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

It is not a de Polignac number, because 13721231522343 - 2¹⁷ = 13721231391271 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 (13721231522333) 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, 2286871920388 + ... + 2286871920393.

It is an arithmetic number, because the mean of its divisors is an integer number (4573743840782).

Almost surely, 2^{13721231522343} is an apocalyptic number.

13721231522343 is a deficient number, since it is larger than the sum of its proper divisors (4573743840785).

13721231522343 is an equidigital number, since it uses as much as digits as its factorization.

13721231522343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4573743840784.

The product of its digits is 181440, while the sum is 39.

The spelling of 13721231522343 in words is "thirteen trillion, seven hundred twenty-one billion, two hundred thirty-one million, five hundred twenty-two thousand, three hundred forty-three".