3220312 has 16 divisors (see below), whose sum is σ = 6138000. Its totient is φ = 1583520.

The previous prime is 3220309. The next prime is 3220319. The reversal of 3220312 is 2130223.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3220292 and 3220301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220319) 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, 2812 + ... + 3787.

It is an arithmetic number, because the mean of its divisors is an integer number (383625).

Almost surely, 2^3220312 is an apocalyptic number.

It is an amenable number.

3220312 is a deficient number, since it is larger than the sum of its proper divisors (2917688).

3220312 is a wasteful number, since it uses less digits than its factorization.

3220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6666 (or 6662 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 3220312 is about 1794.5227777880. The cubic root of 3220312 is about 147.6723944284.

Adding to 3220312 its reverse (2130223), we get a palindrome (5350535).

The spelling of 3220312 in words is "three million, two hundred twenty thousand, three hundred twelve".