13111331011103 has 16 divisors (see below), whose sum is σ = 14951485543680. Its totient is φ = 11390071190016.

The previous prime is 13111331011039. The next prime is 13111331011139. The reversal of 13111331011103 is 30111013311131.

It is a happy number.

It is not a de Polignac number, because 13111331011103 - 2⁶ = 13111331011039 is a prime.

It is a super-2 number, since 2×13111331011103² (a number of 27 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 (13111331041103) 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, 1294601 + ... + 5281917.

It is an arithmetic number, because the mean of its divisors is an integer number (934467846480).

Almost surely, 2^{13111331011103} is an apocalyptic number.

13111331011103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13111331011103 is a deficient number, since it is larger than the sum of its proper divisors (1840154532577).

13111331011103 is a wasteful number, since it uses less digits than its factorization.

13111331011103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002226.

The product of its (nonzero) digits is 81, while the sum is 20.

Adding to 13111331011103 its reverse (30111013311131), we get a palindrome (43222344322234).

The spelling of 13111331011103 in words is "thirteen trillion, one hundred eleven billion, three hundred thirty-one million, eleven thousand, one hundred three".