12303513 has 6 divisors (see below), whose sum is σ = 17771754. Its totient is φ = 8202336.

The previous prime is 12303503. The next prime is 12303527. The reversal of 12303513 is 31530321.

12303513 = 662² + 663² + ... + 688².

It can be written as a sum of positive squares in only one way, i.e., 11471769 + 831744 = 3387^2 + 912^2 .

It is not a de Polignac number, because 12303513 - 2¹³ = 12295321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12303503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 683520 + ... + 683537.

It is an arithmetic number, because the mean of its divisors is an integer number (2961959).

Almost surely, 2^12303513 is an apocalyptic number.

It is an amenable number.

12303513 is a deficient number, since it is larger than the sum of its proper divisors (5468241).

12303513 is a wasteful number, since it uses less digits than its factorization.

12303513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367063 (or 1367060 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 12303513 is about 3507.6363836635. The cubic root of 12303513 is about 230.8569981284.

Adding to 12303513 its reverse (31530321), we get a palindrome (43833834).

The spelling of 12303513 in words is "twelve million, three hundred three thousand, five hundred thirteen".