3221540531 has 16 divisors (see below), whose sum is σ = 3612833280. Its totient is φ = 2846803680.

The previous prime is 3221540527. The next prime is 3221540549. The reversal of 3221540531 is 1350451223.

It is a happy number.

It is not a de Polignac number, because 3221540531 - 2² = 3221540527 is a prime.

It is a super-2 number, since 2×3221540531² = 20756646785751523922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3221540531.

It is not an unprimeable number, because it can be changed into a prime (3221540591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 509270 + ... + 515556.

It is an arithmetic number, because the mean of its divisors is an integer number (225802080).

Almost surely, 2^3221540531 is an apocalyptic number.

3221540531 is a deficient number, since it is larger than the sum of its proper divisors (391292749).

3221540531 is a wasteful number, since it uses less digits than its factorization.

3221540531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7594.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 3221540531 is about 56758.6163591045. The cubic root of 3221540531 is about 1476.9117077149.

Adding to 3221540531 its reverse (1350451223), we get a palindrome (4571991754).

The spelling of 3221540531 in words is "three billion, two hundred twenty-one million, five hundred forty thousand, five hundred thirty-one".