13211716 has 12 divisors (see below), whose sum is σ = 26423488. Its totient is φ = 5662152.

The previous prime is 13211713. The next prime is 13211719. The reversal of 13211716 is 61711231.

It is an interprime number because it is at equal distance from previous prime (13211713) and next prime (13211719).

13211716 is an admirable number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13211711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235896 + ... + 235951.

Almost surely, 2^13211716 is an apocalyptic number.

It is an amenable number.

13211716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13211716 is a wasteful number, since it uses less digits than its factorization.

13211716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471858 (or 471856 counting only the distinct ones).

The product of its digits is 252, while the sum is 22.

The square root of 13211716 is about 3634.7924287365. The cubic root of 13211716 is about 236.4030506085.

Adding to 13211716 its reverse (61711231), we get a palindrome (74922947).

The spelling of 13211716 in words is "thirteen million, two hundred eleven thousand, seven hundred sixteen".