13313101321 has 4 divisors (see below), whose sum is σ = 14337186052. Its totient is φ = 12289016592.

The previous prime is 13313101303. The next prime is 13313101381. The reversal of 13313101321 is 12310131331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12310131331 = 19 ⋅647901649.

It can be written as a sum of positive squares in 2 ways, for example, as 7136870400 + 6176230921 = 84480^2 + 78589^2 .

It is a cyclic number.

It is not a de Polignac number, because 13313101321 - 2⁵ = 13313101289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13313101381) 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, 512042346 + ... + 512042371.

It is an arithmetic number, because the mean of its divisors is an integer number (3584296513).

Almost surely, 2^13313101321 is an apocalyptic number.

It is an amenable number.

13313101321 is a deficient number, since it is larger than the sum of its proper divisors (1024084731).

13313101321 is a wasteful number, since it uses less digits than its factorization.

13313101321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024084730.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 13313101321 its reverse (12310131331), we get a palindrome (25623232652).

The spelling of 13313101321 in words is "thirteen billion, three hundred thirteen million, one hundred one thousand, three hundred twenty-one".