1311103512112 has 20 divisors (see below), whose sum is σ = 2578177430776. Its totient is φ = 645767400960.

The previous prime is 1311103512067. The next prime is 1311103512149. The reversal of 1311103512112 is 2112153011131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611521089 + ... + 611523232.

Almost surely, 2^{1311103512112} is an apocalyptic number.

It is an amenable number.

1311103512112 is a deficient number, since it is larger than the sum of its proper divisors (1267073918664).

1311103512112 is a wasteful number, since it uses less digits than its factorization.

1311103512112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223044396 (or 1223044390 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 22.

Adding to 1311103512112 its reverse (2112153011131), we get a palindrome (3423256523243).

The spelling of 1311103512112 in words is "one trillion, three hundred eleven billion, one hundred three million, five hundred twelve thousand, one hundred twelve".