12317216 has 12 divisors (see below), whose sum is σ = 24249582. Its totient is φ = 6158592.

The previous prime is 12317209. The next prime is 12317233. The reversal of 12317216 is 61271321.

12317216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10368400 + 1948816 = 3220^2 + 1396^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12317191 and 12317200.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192425 + ... + 192488.

Almost surely, 2^12317216 is an apocalyptic number.

12317216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12317216 is a deficient number, since it is larger than the sum of its proper divisors (11932366).

12317216 is an equidigital number, since it uses as much as digits as its factorization.

12317216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384923 (or 384915 counting only the distinct ones).

The product of its digits is 504, while the sum is 23.

The square root of 12317216 is about 3509.5891497439. The cubic root of 12317216 is about 230.9426717554.

Adding to 12317216 its reverse (61271321), we get a palindrome (73588537).

The spelling of 12317216 in words is "twelve million, three hundred seventeen thousand, two hundred sixteen".