3131112111112 has 32 divisors (see below), whose sum is σ = 5890276670400. Its totient is φ = 1560377214144.

The previous prime is 3131112111047. The next prime is 3131112111119. The reversal of 3131112111112 is 2111112111313.

It is a self number, because there is not a number n which added to its sum of digits gives 3131112111112.

It is not an unprimeable number, because it can be changed into a prime (3131112111119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4180933 + ... + 4872619.

It is an arithmetic number, because the mean of its divisors is an integer number (184071145950).

Almost surely, 2^{3131112111112} is an apocalyptic number.

It is an amenable number.

3131112111112 is a deficient number, since it is larger than the sum of its proper divisors (2759164559288).

3131112111112 is a wasteful number, since it uses less digits than its factorization.

3131112111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693565 (or 693561 counting only the distinct ones).

The product of its digits is 36, while the sum is 19.

Adding to 3131112111112 its reverse (2111112111313), we get a palindrome (5242224222425).

The spelling of 3131112111112 in words is "three trillion, one hundred thirty-one billion, one hundred twelve million, one hundred eleven thousand, one hundred twelve".