123103311112 has 32 divisors (see below), whose sum is σ = 238577932800. Its totient is φ = 59487753600.

The previous prime is 123103311091. The next prime is 123103311113. The reversal of 123103311112 is 211113301321.

It is a self number, because there is not a number n which added to its sum of digits gives 123103311112.

It is not an unprimeable number, because it can be changed into a prime (123103311113) 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, 137412 + ... + 514867.

It is an arithmetic number, because the mean of its divisors is an integer number (7455560400).

Almost surely, 2^123103311112 is an apocalyptic number.

It is an amenable number.

123103311112 is a deficient number, since it is larger than the sum of its proper divisors (115474621688).

123103311112 is a wasteful number, since it uses less digits than its factorization.

123103311112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653077 (or 653073 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 123103311112 its reverse (211113301321), we get a palindrome (334216612433).

The spelling of 123103311112 in words is "one hundred twenty-three billion, one hundred three million, three hundred eleven thousand, one hundred twelve".