12312132 has 36 divisors (see below), whose sum is σ = 33420240. Its totient is φ = 3517584.

The previous prime is 12312119. The next prime is 12312143. The reversal of 12312132 is 23121321.

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

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, 9882 + ... + 11057.

It is an arithmetic number, because the mean of its divisors is an integer number (928340).

Almost surely, 2^12312132 is an apocalyptic number.

12312132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12312132 is an abundant number, since it is smaller than the sum of its proper divisors (21108108).

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

12312132 is a wasteful number, since it uses less digits than its factorization.

12312132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20960 (or 20951 counting only the distinct ones).

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

The square root of 12312132 is about 3508.8647736839. The cubic root of 12312132 is about 230.9108930883.

Adding to 12312132 its reverse (23121321), we get a palindrome (35433453).

The spelling of 12312132 in words is "twelve million, three hundred twelve thousand, one hundred thirty-two".