13001321343 has 48 divisors (see below), whose sum is σ = 18408370176. Its totient is φ = 8160768000.

The previous prime is 13001321317. The next prime is 13001321357. The reversal of 13001321343 is 34312310031.

It is not a de Polignac number, because 13001321343 - 2¹⁸ = 13001059199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001321303) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50588671 + ... + 50588927.

It is an arithmetic number, because the mean of its divisors is an integer number (383507712).

Almost surely, 2^13001321343 is an apocalyptic number.

13001321343 is a deficient number, since it is larger than the sum of its proper divisors (5407048833).

13001321343 is a wasteful number, since it uses less digits than its factorization.

13001321343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13001321343 its reverse (34312310031), we get a palindrome (47313631374).

The spelling of 13001321343 in words is "thirteen billion, one million, three hundred twenty-one thousand, three hundred forty-three".