12132312 has 16 divisors (see below), whose sum is σ = 30330840. Its totient is φ = 4044096.

The previous prime is 12132311. The next prime is 12132319. The reversal of 12132312 is 21323121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12132291 and 12132300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252733 + ... + 252780.

Almost surely, 2^12132312 is an apocalyptic number.

12132312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12132312 is an abundant number, since it is smaller than the sum of its proper divisors (18198528).

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

12132312 is a wasteful number, since it uses less digits than its factorization.

12132312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505522 (or 505518 counting only the distinct ones).

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

The square root of 12132312 is about 3483.1468530626. The cubic root of 12132312 is about 229.7812160217.

Adding to 12132312 its reverse (21323121), we get a palindrome (33455433).

The spelling of 12132312 in words is "twelve million, one hundred thirty-two thousand, three hundred twelve".