123103113112 has 16 divisors (see below), whose sum is σ = 263792385360. Its totient is φ = 52758477024.

The previous prime is 123103113109. The next prime is 123103113121. The reversal of 123103113112 is 211311301321.

It is a self number, because there is not a number n which added to its sum of digits gives 123103113112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1099134883 + ... + 1099134994.

It is an arithmetic number, because the mean of its divisors is an integer number (16487024085).

Almost surely, 2^123103113112 is an apocalyptic number.

It is an amenable number.

123103113112 is an abundant number, since it is smaller than the sum of its proper divisors (140689272248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123103113112 is a wasteful number, since it uses less digits than its factorization.

123103113112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198269890 (or 2198269886 counting only the distinct ones).

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

Adding to 123103113112 its reverse (211311301321), we get a palindrome (334414414433).

The spelling of 123103113112 in words is "one hundred twenty-three billion, one hundred three million, one hundred thirteen thousand, one hundred twelve".