1311113043 has 24 divisors (see below), whose sum is σ = 1942340400. Its totient is φ = 851780160.

The previous prime is 1311113029. The next prime is 1311113053. The reversal of 1311113043 is 3403111131.

It is not a de Polignac number, because 1311113043 - 2⁸ = 1311112787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311113053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174733 + ... + 182081.

It is an arithmetic number, because the mean of its divisors is an integer number (80930850).

Almost surely, 2^1311113043 is an apocalyptic number.

1311113043 is a deficient number, since it is larger than the sum of its proper divisors (631227357).

1311113043 is a wasteful number, since it uses less digits than its factorization.

1311113043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859 (or 7856 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1311113043 is about 36209.2949807090. The cubic root of 1311113043 is about 1094.4939852525.

Adding to 1311113043 its reverse (3403111131), we get a palindrome (4714224174).

The spelling of 1311113043 in words is "one billion, three hundred eleven million, one hundred thirteen thousand, forty-three".