12130513 has 4 divisors (see below), whose sum is σ = 12145588. Its totient is φ = 12115440.

The previous prime is 12130507. The next prime is 12130523. The reversal of 12130513 is 31503121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3968064 + 8162449 = 1992^2 + 2857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12130513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12130523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6258 + ... + 7963.

It is an arithmetic number, because the mean of its divisors is an integer number (3036397).

Almost surely, 2^12130513 is an apocalyptic number.

It is an amenable number.

12130513 is a deficient number, since it is larger than the sum of its proper divisors (15075).

12130513 is an equidigital number, since it uses as much as digits as its factorization.

12130513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15074.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 12130513 is about 3482.8885999986. Note that the first 3 decimals coincide. The cubic root of 12130513 is about 229.7698580095.

Adding to 12130513 its reverse (31503121), we get a palindrome (43633634).

The spelling of 12130513 in words is "twelve million, one hundred thirty thousand, five hundred thirteen".