13321320311 has 16 divisors (see below), whose sum is σ = 14418686688. Its totient is φ = 12234499200.

The previous prime is 13321320307. The next prime is 13321320319. The reversal of 13321320311 is 11302312331.

It is a cyclic number.

It is not a de Polignac number, because 13321320311 - 2² = 13321320307 is a prime.

It is a super-2 number, since 2×13321320311² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321320319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2169716 + ... + 2175846.

It is an arithmetic number, because the mean of its divisors is an integer number (901167918).

Almost surely, 2^13321320311 is an apocalyptic number.

13321320311 is a deficient number, since it is larger than the sum of its proper divisors (1097366377).

13321320311 is a wasteful number, since it uses less digits than its factorization.

13321320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6962.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13321320311 its reverse (11302312331), we get a palindrome (24623632642).

The spelling of 13321320311 in words is "thirteen billion, three hundred twenty-one million, three hundred twenty thousand, three hundred eleven".