12020312 has 32 divisors (see below), whose sum is σ = 24499200. Its totient is φ = 5508000.

The previous prime is 12020311. The next prime is 12020341. The reversal of 12020312 is 21302021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12020293 and 12020302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020311) 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 7 ways as a sum of consecutive naturals, for example, 3437 + ... + 5987.

It is an arithmetic number, because the mean of its divisors is an integer number (765600).

Almost surely, 2^12020312 is an apocalyptic number.

It is an amenable number.

12020312 is an abundant number, since it is smaller than the sum of its proper divisors (12478888).

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

12020312 is a wasteful number, since it uses less digits than its factorization.

12020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607 (or 2603 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12020312 is about 3467.0321602200. The cubic root of 12020312 is about 229.0719503387.

Adding to 12020312 its reverse (21302021), we get a palindrome (33322333).

The spelling of 12020312 in words is "twelve million, twenty thousand, three hundred twelve".