12130306 has 4 divisors (see below), whose sum is σ = 18195462. Its totient is φ = 6065152.

The previous prime is 12130289. The next prime is 12130309. The reversal of 12130306 is 60303121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9554281 + 2576025 = 3091^2 + 1605^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12130306.

It is not an unprimeable number, because it can be changed into a prime (12130309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3032575 + ... + 3032578.

Almost surely, 2^12130306 is an apocalyptic number.

12130306 is a deficient number, since it is larger than the sum of its proper divisors (6065156).

12130306 is an equidigital number, since it uses as much as digits as its factorization.

12130306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6065155.

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

The square root of 12130306 is about 3482.8588831591. The cubic root of 12130306 is about 229.7685510400.

Adding to 12130306 its reverse (60303121), we get a palindrome (72433427).

The spelling of 12130306 in words is "twelve million, one hundred thirty thousand, three hundred six".