12143312 has 10 divisors (see below), whose sum is σ = 23527698. Its totient is φ = 6071648.

The previous prime is 12143309. The next prime is 12143317. The reversal of 12143312 is 21334121.

It can be written as a sum of positive squares in only one way, i.e., 9759376 + 2383936 = 3124^2 + 1544^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 379463 + ... + 379494.

Almost surely, 2^12143312 is an apocalyptic number.

It is an amenable number.

12143312 is a deficient number, since it is larger than the sum of its proper divisors (11384386).

12143312 is an equidigital number, since it uses as much as digits as its factorization.

12143312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758965 (or 758959 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 12143312 is about 3484.7255272116. The cubic root of 12143312 is about 229.8506402683.

Adding to 12143312 its reverse (21334121), we get a palindrome (33477433).

The spelling of 12143312 in words is "twelve million, one hundred forty-three thousand, three hundred twelve".