3221131331 has 16 divisors (see below), whose sum is σ = 3553735680. Its totient is φ = 2895285120.

The previous prime is 3221131307. The next prime is 3221131363. The reversal of 3221131331 is 1331311223.

It is a cyclic number.

It is not a de Polignac number, because 3221131331 - 2¹⁰ = 3221130307 is a prime.

It is a super-2 number, since 2×3221131331² = 20751374103099663122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3221131391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 542726 + ... + 548628.

It is an arithmetic number, because the mean of its divisors is an integer number (222108480).

Almost surely, 2^3221131331 is an apocalyptic number.

3221131331 is a deficient number, since it is larger than the sum of its proper divisors (332604349).

3221131331 is a wasteful number, since it uses less digits than its factorization.

3221131331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6466.

The product of its digits is 324, while the sum is 20.

The square root of 3221131331 is about 56755.0115055931. The cubic root of 3221131331 is about 1476.8491726373.

Adding to 3221131331 its reverse (1331311223), we get a palindrome (4552442554).

It can be divided in two parts, 322113 and 1331, that multiplied together give a triangular number (428732403 = T₂₉₂₈₂).

The spelling of 3221131331 in words is "three billion, two hundred twenty-one million, one hundred thirty-one thousand, three hundred thirty-one".