12030312 has 64 divisors (see below), whose sum is σ = 34761600. Its totient is φ = 3398400.

The previous prime is 12030301. The next prime is 12030323. The reversal of 12030312 is 21303021.

It is a happy number.

12030312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12030301) and next prime (12030323).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16614 + ... + 17322.

It is an arithmetic number, because the mean of its divisors is an integer number (543150).

Almost surely, 2^12030312 is an apocalyptic number.

12030312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12030312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17380800).

12030312 is an abundant number, since it is smaller than the sum of its proper divisors (22731288).

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

12030312 is a wasteful number, since it uses less digits than its factorization.

12030312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 12030312 is about 3468.4740160480. The cubic root of 12030312 is about 229.1354563043.

Adding to 12030312 its reverse (21303021), we get a palindrome (33333333).

The spelling of 12030312 in words is "twelve million, thirty thousand, three hundred twelve".