13111112312 has 8 divisors (see below), whose sum is σ = 24583335600. Its totient is φ = 6555556152.

The previous prime is 13111112299. The next prime is 13111112321. The reversal of 13111112312 is 21321111131.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 819444512 + ... + 819444527.

It is an arithmetic number, because the mean of its divisors is an integer number (3072916950).

Almost surely, 2^13111112312 is an apocalyptic number.

It is an amenable number.

13111112312 is a deficient number, since it is larger than the sum of its proper divisors (11472223288).

13111112312 is a wasteful number, since it uses less digits than its factorization.

13111112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638889045 (or 1638889041 counting only the distinct ones).

The product of its digits is 36, while the sum is 17.

Adding to 13111112312 its reverse (21321111131), we get a palindrome (34432223443).

The spelling of 13111112312 in words is "thirteen billion, one hundred eleven million, one hundred twelve thousand, three hundred twelve".