1311103331012 has 12 divisors (see below), whose sum is σ = 2294440982316. Its totient is φ = 655548764640.

The previous prime is 1311103330951. The next prime is 1311103331077. The reversal of 1311103331012 is 2101333011131.

It can be written as a sum of positive squares in 2 ways, for example, as 1088049265216 + 223054065796 = 1043096^2 + 472286^2 .

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, 535058 + ... + 1705430.

It is an arithmetic number, because the mean of its divisors is an integer number (191203415193).

Almost surely, 2^{1311103331012} is an apocalyptic number.

It is an amenable number.

1311103331012 is a deficient number, since it is larger than the sum of its proper divisors (983337651304).

1311103331012 is a wasteful number, since it uses less digits than its factorization.

1311103331012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450438 (or 1450436 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1311103331012 its reverse (2101333011131), we get a palindrome (3412436342143).

The spelling of 1311103331012 in words is "one trillion, three hundred eleven billion, one hundred three million, three hundred thirty-one thousand, twelve".