123132112 has 20 divisors (see below), whose sum is σ = 239599620. Its totient is φ = 61299968.

The previous prime is 123132109. The next prime is 123132137. The reversal of 123132112 is 211231321.

It can be written as a sum of positive squares in 2 ways, for example, as 7268416 + 115863696 = 2696^2 + 10764^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 12787 + ... + 20242.

It is an arithmetic number, because the mean of its divisors is an integer number (11979981).

Almost surely, 2^123132112 is an apocalyptic number.

It is an amenable number.

123132112 is a deficient number, since it is larger than the sum of its proper divisors (116467508).

123132112 is a wasteful number, since it uses less digits than its factorization.

123132112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33270 (or 33264 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 123132112 is about 11096.4909768809. The cubic root of 123132112 is about 497.4969732903.

Adding to 123132112 its reverse (211231321), we get a palindrome (334363433).

The spelling of 123132112 in words is "one hundred twenty-three million, one hundred thirty-two thousand, one hundred twelve".