12231132 has 12 divisors (see below), whose sum is σ = 28539336. Its totient is φ = 4077040.

The previous prime is 12231083. The next prime is 12231133. The reversal of 12231132 is 23113221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509619 + ... + 509642.

It is an arithmetic number, because the mean of its divisors is an integer number (2378278).

Almost surely, 2^12231132 is an apocalyptic number.

12231132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12231132 is an abundant number, since it is smaller than the sum of its proper divisors (16308204).

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

12231132 is a wasteful number, since it uses less digits than its factorization.

12231132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019268 (or 1019266 counting only the distinct ones).

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

The square root of 12231132 is about 3497.3035327235. The cubic root of 12231132 is about 230.4034004369.

Adding to 12231132 its reverse (23113221), we get a palindrome (35344353).

The spelling of 12231132 in words is "twelve million, two hundred thirty-one thousand, one hundred thirty-two".