13220320233313 has 4 divisors (see below), whose sum is σ = 13220589113860. Its totient is φ = 13220051352768.

The previous prime is 13220320233301. The next prime is 13220320233331. The reversal of 13220320233313 is 31333202302231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9466987461409 + 3753332771904 = 3076847^2 + 1937352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13220320233313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13220321233313) 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, 134366508 + ... + 134464861.

It is an arithmetic number, because the mean of its divisors is an integer number (3305147278465).

Almost surely, 2^{13220320233313} is an apocalyptic number.

It is an amenable number.

13220320233313 is a deficient number, since it is larger than the sum of its proper divisors (268880547).

13220320233313 is an equidigital number, since it uses as much as digits as its factorization.

13220320233313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268880546.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 13220320233313 its reverse (31333202302231), we get a palindrome (44553522535544).

The spelling of 13220320233313 in words is "thirteen trillion, two hundred twenty billion, three hundred twenty million, two hundred thirty-three thousand, three hundred thirteen".