12031306 has 16 divisors (see below), whose sum is σ = 20744640. Its totient is φ = 5126400.

The previous prime is 12031301. The next prime is 12031307. The reversal of 12031306 is 60313021.

It is a self number, because there is not a number n which added to its sum of digits gives 12031306.

It is not an unprimeable number, because it can be changed into a prime (12031301) 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, 106 + ... + 4906.

It is an arithmetic number, because the mean of its divisors is an integer number (1296540).

Almost surely, 2^12031306 is an apocalyptic number.

12031306 is a deficient number, since it is larger than the sum of its proper divisors (8713334).

12031306 is a wasteful number, since it uses less digits than its factorization.

12031306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 12031306 is about 3468.6173037682. The cubic root of 12031306 is about 229.1417668741.

Adding to 12031306 its reverse (60313021), we get a palindrome (72344327).

The spelling of 12031306 in words is "twelve million, thirty-one thousand, three hundred six".