123231132 has 36 divisors (see below), whose sum is σ = 323040536. Its totient is φ = 41076720.

The previous prime is 123231109. The next prime is 123231161. The reversal of 123231132 is 231132321.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

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.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62419 + ... + 64362.

Almost surely, 2^123231132 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.

123231132 is an abundant number, since it is smaller than the sum of its proper divisors (199809404).

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 sum of its prime factors is 126800 (or 126786 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

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".