1311112220313 has 32 divisors (see below), whose sum is σ = 2039474267136. Its totient is φ = 733665187008.

The previous prime is 1311112220287. The next prime is 1311112220389. The reversal of 1311112220313 is 3130222111131.

It is not a de Polignac number, because 1311112220313 - 2⁸ = 1311112220057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1311112220313.

It is not an unprimeable number, because it can be changed into a prime (1311112220393) 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 31 ways as a sum of consecutive naturals, for example, 544095 + ... + 1708292.

It is an arithmetic number, because the mean of its divisors is an integer number (63733570848).

Almost surely, 2^{1311112220313} is an apocalyptic number.

It is an amenable number.

1311112220313 is a deficient number, since it is larger than the sum of its proper divisors (728362046823).

1311112220313 is a wasteful number, since it uses less digits than its factorization.

1311112220313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252973.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1311112220313 its reverse (3130222111131), we get a palindrome (4441334331444).

The spelling of 1311112220313 in words is "one trillion, three hundred eleven billion, one hundred twelve million, two hundred twenty thousand, three hundred thirteen".