12305513 has 8 divisors (see below), whose sum is σ = 13555776. Its totient is φ = 11077200.

The previous prime is 12305509. The next prime is 12305533. The reversal of 12305513 is 31550321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12305513 - 2² = 12305509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12305533) 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, 4298 + ... + 6563.

It is an arithmetic number, because the mean of its divisors is an integer number (1694472).

Almost surely, 2^12305513 is an apocalyptic number.

It is an amenable number.

12305513 is a deficient number, since it is larger than the sum of its proper divisors (1250263).

12305513 is a wasteful number, since it uses less digits than its factorization.

12305513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10975.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 12305513 is about 3507.9214643432. The cubic root of 12305513 is about 230.8695064524.

Adding to 12305513 its reverse (31550321), we get a palindrome (43855834).

The spelling of 12305513 in words is "twelve million, three hundred five thousand, five hundred thirteen".