13220312311 has 2 divisors, whose sum is σ = 13220312312. Its totient is φ = 13220312310.

The previous prime is 13220312279. The next prime is 13220312323. The reversal of 13220312311 is 11321302231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13220312311 - 2⁵ = 13220312279 is a prime.

It is a super-3 number, since 3×13220312311³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220312711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610156155 + 6610156156.

It is an arithmetic number, because the mean of its divisors is an integer number (6610156156).

Almost surely, 2^13220312311 is an apocalyptic number.

13220312311 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220312311 is an equidigital number, since it uses as much as digits as its factorization.

13220312311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13220312311 its reverse (11321302231), we get a palindrome (24541614542).

The spelling of 13220312311 in words is "thirteen billion, two hundred twenty million, three hundred twelve thousand, three hundred eleven".