12316216 has 32 divisors (see below), whose sum is σ = 25369200. Its totient is φ = 5559040.

The previous prime is 12316181. The next prime is 12316219. The reversal of 12316216 is 61261321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12316219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14820 + ... + 15628.

Almost surely, 2^12316216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12316216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12684600).

12316216 is an abundant number, since it is smaller than the sum of its proper divisors (13052984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12316216 is a wasteful number, since it uses less digits than its factorization.

12316216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 995 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

The square root of 12316216 is about 3509.4466800338. The cubic root of 12316216 is about 230.9364217251.

Adding to 12316216 its reverse (61261321), we get a palindrome (73577537).

It can be divided in two parts, 1231 and 6216, that added together give a palindrome (7447).

The spelling of 12316216 in words is "twelve million, three hundred sixteen thousand, two hundred sixteen".