12071312 has 40 divisors (see below), whose sum is σ = 25792992. Its totient is φ = 5427200.

The previous prime is 12071299. The next prime is 12071317. The reversal of 12071312 is 21317021.

It is not an unprimeable number, because it can be changed into a prime (12071317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18512 + ... + 19152.

Almost surely, 2^12071312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12071312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12896496).

12071312 is an abundant number, since it is smaller than the sum of its proper divisors (13721680).

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

12071312 is a wasteful number, since it uses less digits than its factorization.

12071312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 12071312 is about 3474.3793690384. The cubic root of 12071312 is about 229.3954634561.

Adding to 12071312 its reverse (21317021), we get a palindrome (33388333).

The spelling of 12071312 in words is "twelve million, seventy-one thousand, three hundred twelve".