1311113231103 has 8 divisors (see below), whose sum is σ = 1882624126768. Its totient is φ = 806838911424.

The previous prime is 1311113231033. The next prime is 1311113231161. The reversal of 1311113231103 is 3011323111131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311113231103 - 2⁹ = 1311113230591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311113231103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311113239103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16809143950 + ... + 16809144027.

It is an arithmetic number, because the mean of its divisors is an integer number (235328015846).

Almost surely, 2^{1311113231103} is an apocalyptic number.

1311113231103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1311113231103 is a deficient number, since it is larger than the sum of its proper divisors (571510895665).

1311113231103 is a wasteful number, since it uses less digits than its factorization.

1311113231103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33618287993.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 1311113231103 its reverse (3011323111131), we get a palindrome (4322436342234).

The spelling of 1311113231103 in words is "one trillion, three hundred eleven billion, one hundred thirteen million, two hundred thirty-one thousand, one hundred three".