12530317 has 4 divisors (see below), whose sum is σ = 12541276. Its totient is φ = 12519360.

The previous prime is 12530311. The next prime is 12530321. The reversal of 12530317 is 71303521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6007401 + 6522916 = 2451^2 + 2554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12530317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12530311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3534 + ... + 6127.

It is an arithmetic number, because the mean of its divisors is an integer number (3135319).

Almost surely, 2^12530317 is an apocalyptic number.

It is an amenable number.

12530317 is a deficient number, since it is larger than the sum of its proper divisors (10959).

12530317 is an equidigital number, since it uses as much as digits as its factorization.

12530317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10958.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 12530317 is about 3539.8187806723. The cubic root of 12530317 is about 232.2669155965.

Adding to 12530317 its reverse (71303521), we get a palindrome (83833838).

The spelling of 12530317 in words is "twelve million, five hundred thirty thousand, three hundred seventeen".