12305217 has 16 divisors (see below), whose sum is σ = 17568000. Its totient is φ = 7637904.

The previous prime is 12305213. The next prime is 12305221. The reversal of 12305217 is 71250321.

12305217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12305213) and next prime (12305221).

It is not a de Polignac number, because 12305217 - 2² = 12305213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12305193 and 12305202.

It is not an unprimeable number, because it can be changed into a prime (12305213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1534 + ... + 5192.

It is an arithmetic number, because the mean of its divisors is an integer number (1098000).

Almost surely, 2^12305217 is an apocalyptic number.

It is an amenable number.

12305217 is a deficient number, since it is larger than the sum of its proper divisors (5262783).

12305217 is a wasteful number, since it uses less digits than its factorization.

12305217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 12305217 is about 3507.8792738633. The cubic root of 12305217 is about 230.8676553059.

Adding to 12305217 its reverse (71250321), we get a palindrome (83555538).

The spelling of 12305217 in words is "twelve million, three hundred five thousand, two hundred seventeen".