3231216 has 60 divisors (see below), whose sum is σ = 9526920. Its totient is φ = 1019520.

The previous prime is 3231211. The next prime is 3231227. The reversal of 3231216 is 6121323.

3231216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3231211) 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 11 ways as a sum of consecutive naturals, for example, 2146 + ... + 3326.

It is an arithmetic number, because the mean of its divisors is an integer number (158782).

Almost surely, 2^3231216 is an apocalyptic number.

3231216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3231216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4763460).

3231216 is an abundant number, since it is smaller than the sum of its proper divisors (6295704).

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

3231216 is a wasteful number, since it uses less digits than its factorization.

3231216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214 (or 1205 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 3231216 is about 1797.5583439766. The cubic root of 3231216 is about 147.8388799319.

Adding to 3231216 its reverse (6121323), we get a palindrome (9352539).

The spelling of 3231216 in words is "three million, two hundred thirty-one thousand, two hundred sixteen".