It is a tau number, because it is divible by the number of its divisors (36).
It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
It is an unprimeable number.
Almost surely, 2123231132 is an apocalyptic number.
123231132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
123231132 is a wasteful number, since it uses less digits than its factorization.
123231132 is an odious number, because the sum of its binary digits is odd.
The square root of 123231132 is about 11100.9518510802. The cubic root of 123231132 is about 497.6302960828.
Adding to 123231132 its reverse (231132321), we get a palindrome (354363453).
The spelling of 123231132 in words is "one hundred twenty-three million, two hundred thirty-one thousand, one hundred thirty-two".