13220313311 has 4 divisors (see below), whose sum is σ = 13235320224. Its totient is φ = 13205306400.

The previous prime is 13220313277. The next prime is 13220313319. The reversal of 13220313311 is 11331302231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11331302231 = 397 ⋅28542323.

It is a cyclic number.

It is not a de Polignac number, because 13220313311 - 2¹⁴ = 13220296927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220313319) 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, 7502135 + ... + 7503896.

It is an arithmetic number, because the mean of its divisors is an integer number (3308830056).

Almost surely, 2^13220313311 is an apocalyptic number.

13220313311 is a deficient number, since it is larger than the sum of its proper divisors (15006913).

13220313311 is an equidigital number, since it uses as much as digits as its factorization.

13220313311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15006912.

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

Adding to 13220313311 its reverse (11331302231), we get a palindrome (24551615542).

The spelling of 13220313311 in words is "thirteen billion, two hundred twenty million, three hundred thirteen thousand, three hundred eleven".