1312311120112 has 40 divisors (see below), whose sum is σ = 2591920642176. Its totient is φ = 643514663616.

The previous prime is 1312311120101. The next prime is 1312311120151. The reversal of 1312311120112 is 2110211132131.

It is a super-2 number, since 2×1312311120112² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1312311120112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2453068 + ... + 2939755.

Almost surely, 2^{1312311120112} is an apocalyptic number.

It is an amenable number.

1312311120112 is a deficient number, since it is larger than the sum of its proper divisors (1279609522064).

1312311120112 is a wasteful number, since it uses less digits than its factorization.

1312311120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5393125 (or 5393119 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1312311120112 its reverse (2110211132131), we get a palindrome (3422522252243).

The spelling of 1312311120112 in words is "one trillion, three hundred twelve billion, three hundred eleven million, one hundred twenty thousand, one hundred twelve".