123203112 has 16 divisors (see below), whose sum is σ = 308007840. Its totient is φ = 41067696.

The previous prime is 123203053. The next prime is 123203123. The reversal of 123203112 is 211302321.

It is a junction number, because it is equal to n+sod(n) for n = 123203091 and 123203100.

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, 2566708 + ... + 2566755.

It is an arithmetic number, because the mean of its divisors is an integer number (19250490).

Almost surely, 2^123203112 is an apocalyptic number.

123203112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123203112 is an abundant number, since it is smaller than the sum of its proper divisors (184804728).

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

123203112 is a wasteful number, since it uses less digits than its factorization.

123203112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133472 (or 5133468 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123203112 is about 11099.6897253932. The cubic root of 123203112 is about 497.5925765617.

Adding to 123203112 its reverse (211302321), we get a palindrome (334505433).

The spelling of 123203112 in words is "one hundred twenty-three million, two hundred three thousand, one hundred twelve".