3220281 has 6 divisors (see below), whose sum is σ = 4651530. Its totient is φ = 2146848.

The previous prime is 3220271. The next prime is 3220289. The reversal of 3220281 is 1820223.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2944656 + 275625 = 1716^2 + 525^2 .

It is not a de Polignac number, because 3220281 - 2⁷ = 3220153 is a prime.

It is a super-2 number, since 2×3220281² = 20740419437922, which contains 22 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (3220289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178896 + ... + 178913.

It is an arithmetic number, because the mean of its divisors is an integer number (775255).

Almost surely, 2^3220281 is an apocalyptic number.

It is an amenable number.

3220281 is a deficient number, since it is larger than the sum of its proper divisors (1431249).

3220281 is a wasteful number, since it uses less digits than its factorization.

3220281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357815 (or 357812 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3220281 is about 1794.5141403734. The cubic root of 3220281 is about 147.6719205759.

The spelling of 3220281 in words is "three million, two hundred twenty thousand, two hundred eighty-one".