13423510340223 has 4 divisors (see below), whose sum is σ = 17898013786968. Its totient is φ = 8949006893480.

The previous prime is 13423510340213. The next prime is 13423510340239. The reversal of 13423510340223 is 32204301532431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13423510340223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423510340203) 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, 2237251723368 + ... + 2237251723373.

It is an arithmetic number, because the mean of its divisors is an integer number (4474503446742).

Almost surely, 2^{13423510340223} is an apocalyptic number.

13423510340223 is a deficient number, since it is larger than the sum of its proper divisors (4474503446745).

13423510340223 is an equidigital number, since it uses as much as digits as its factorization.

13423510340223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4474503446744.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 13423510340223 its reverse (32204301532431), we get a palindrome (45627811872654).

The spelling of 13423510340223 in words is "thirteen trillion, four hundred twenty-three billion, five hundred ten million, three hundred forty thousand, two hundred twenty-three".