3220531 has 8 divisors (see below), whose sum is σ = 3425760. Its totient is φ = 3017088.

The previous prime is 3220523. The next prime is 3220543. The reversal of 3220531 is 1350223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3220531 - 2³ = 3220523 is a prime.

It is a super-2 number, since 2×3220531² = 20743639843922, which contains 22 as substring.

It is a Duffinian number.

3220531 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3220561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6370 + ... + 6856.

It is an arithmetic number, because the mean of its divisors is an integer number (428220).

Almost surely, 2^3220531 is an apocalyptic number.

3220531 is a deficient number, since it is larger than the sum of its proper divisors (205229).

3220531 is a wasteful number, since it uses less digits than its factorization.

3220531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 3220531 is about 1794.5837957588. The cubic root of 3220531 is about 147.6757418806.

Adding to 3220531 its reverse (1350223), we get a palindrome (4570754).

The spelling of 3220531 in words is "three million, two hundred twenty thousand, five hundred thirty-one".