3212431221 has 24 divisors (see below), whose sum is σ = 4419285696. Its totient is φ = 2074455360.

The previous prime is 3212431219. The next prime is 3212431241. The reversal of 3212431221 is 1221342123.

It is not a de Polignac number, because 3212431221 - 2¹ = 3212431219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3212431241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3267496 + ... + 3268478.

It is an arithmetic number, because the mean of its divisors is an integer number (184136904).

Almost surely, 2^3212431221 is an apocalyptic number.

It is an amenable number.

3212431221 is a deficient number, since it is larger than the sum of its proper divisors (1206854475).

3212431221 is an equidigital number, since it uses as much as digits as its factorization.

3212431221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1190 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 3212431221 is about 56678.3134981979. The cubic root of 3212431221 is about 1475.5183425385.

Adding to 3212431221 its reverse (1221342123), we get a palindrome (4433773344).

The spelling of 3212431221 in words is "three billion, two hundred twelve million, four hundred thirty-one thousand, two hundred twenty-one".