13111440311 has 6 divisors (see below), whose sum is σ = 13239982440. Its totient is φ = 12984134268.

The previous prime is 13111440269. The next prime is 13111440319. The reversal of 13111440311 is 11304411131.

13111440311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13111440311 - 2¹⁰ = 13111439287 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 (13111440319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 607331 + ... + 628548.

It is an arithmetic number, because the mean of its divisors is an integer number (2206663740).

Almost surely, 2^13111440311 is an apocalyptic number.

13111440311 is a deficient number, since it is larger than the sum of its proper divisors (128542129).

13111440311 is an equidigital number, since it uses as much as digits as its factorization.

13111440311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236085 (or 1235982 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 13111440311 its reverse (11304411131), we get a palindrome (24415851442).

The spelling of 13111440311 in words is "thirteen billion, one hundred eleven million, four hundred forty thousand, three hundred eleven".