12371217 has 16 divisors (see below), whose sum is σ = 17635968. Its totient is φ = 7694720.

The previous prime is 12371213. The next prime is 12371221. The reversal of 12371217 is 71217321.

12371217 is digitally balanced in base 3, 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 (12371213) and next prime (12371221).

It is a cyclic number.

It is not a de Polignac number, because 12371217 - 2² = 12371213 is a prime.

It is a super-3 number, since 3×12371217³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12371213) 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 15 ways as a sum of consecutive naturals, for example, 643 + ... + 5015.

It is an arithmetic number, because the mean of its divisors is an integer number (1102248).

Almost surely, 2^12371217 is an apocalyptic number.

It is an amenable number.

12371217 is a deficient number, since it is larger than the sum of its proper divisors (5264751).

12371217 is a wasteful number, since it uses less digits than its factorization.

12371217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440.

The product of its digits is 588, while the sum is 24.

The square root of 12371217 is about 3517.2740865619. The cubic root of 12371217 is about 231.2796784894.

Adding to 12371217 its reverse (71217321), we get a palindrome (83588538).

The spelling of 12371217 in words is "twelve million, three hundred seventy-one thousand, two hundred seventeen".