11123123231312 has 40 divisors (see below), whose sum is σ = 21686549632704. Its totient is φ = 5526604629504.

The previous prime is 11123123231261. The next prime is 11123123231323. The reversal of 11123123231312 is 21313232132111.

11123123231312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17083613 + ... + 17722755.

Almost surely, 2^{11123123231312} is an apocalyptic number.

It is an amenable number.

11123123231312 is a deficient number, since it is larger than the sum of its proper divisors (10563426401392).

11123123231312 is a wasteful number, since it uses less digits than its factorization.

11123123231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645987 (or 645981 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

Adding to 11123123231312 its reverse (21313232132111), we get a palindrome (32436355363423).

The spelling of 11123123231312 in words is "eleven trillion, one hundred twenty-three billion, one hundred twenty-three million, two hundred thirty-one thousand, three hundred twelve".