1311311122 has 24 divisors (see below), whose sum is σ = 2166570000. Its totient is φ = 594801240.

The previous prime is 1311311081. The next prime is 1311311143. The reversal of 1311311122 is 2211131131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1311311096 and 1311311105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115329 + ... + 126187.

It is an arithmetic number, because the mean of its divisors is an integer number (90273750).

Almost surely, 2^1311311122 is an apocalyptic number.

1311311122 is a deficient number, since it is larger than the sum of its proper divisors (855258878).

1311311122 is a wasteful number, since it uses less digits than its factorization.

1311311122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11382 (or 11371 counting only the distinct ones).

The product of its digits is 36, while the sum is 16.

The square root of 1311311122 is about 36212.0300728915. The cubic root of 1311311122 is about 1094.5491000927.

Adding to 1311311122 its reverse (2211131131), we get a palindrome (3522442253).

Subtracting 1311311122 from its reverse (2211131131), we obtain a square (899820009 = 29997²).

The spelling of 1311311122 in words is "one billion, three hundred eleven million, three hundred eleven thousand, one hundred twenty-two".