13001021131323 has 4 divisors (see below), whose sum is σ = 17334694841768. Its totient is φ = 8667347420880.

The previous prime is 13001021131289. The next prime is 13001021131393. The reversal of 13001021131323 is 32313112010031.

It is a happy number.

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

It is not a de Polignac number, because 13001021131323 - 2²⁵ = 13000987576891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13001021131323.

It is not an unprimeable number, because it can be changed into a prime (13001021131393) 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, 2166836855218 + ... + 2166836855223.

It is an arithmetic number, because the mean of its divisors is an integer number (4333673710442).

Almost surely, 2^{13001021131323} is an apocalyptic number.

13001021131323 is a deficient number, since it is larger than the sum of its proper divisors (4333673710445).

13001021131323 is an equidigital number, since it uses as much as digits as its factorization.

13001021131323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333673710444.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 13001021131323 its reverse (32313112010031), we get a palindrome (45314133141354).

The spelling of 13001021131323 in words is "thirteen trillion, one billion, twenty-one million, one hundred thirty-one thousand, three hundred twenty-three".