3231222321 has 16 divisors (see below), whose sum is σ = 4617120384. Its totient is φ = 2004799104.

The previous prime is 3231222307. The next prime is 3231222359. The reversal of 3231222321 is 1232221323.

It is a happy number.

It is not a de Polignac number, because 3231222321 - 2⁶ = 3231222257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3231222301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630276 + ... + 635381.

It is an arithmetic number, because the mean of its divisors is an integer number (288570024).

Almost surely, 2^3231222321 is an apocalyptic number.

It is an amenable number.

3231222321 is a deficient number, since it is larger than the sum of its proper divisors (1385898063).

3231222321 is a wasteful number, since it uses less digits than its factorization.

3231222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265720.

The product of its digits is 864, while the sum is 21.

The square root of 3231222321 is about 56843.8415397834. The cubic root of 3231222321 is about 1478.3897633412.

Adding to 3231222321 its reverse (1232221323), we get a palindrome (4463443644).

The spelling of 3231222321 in words is "three billion, two hundred thirty-one million, two hundred twenty-two thousand, three hundred twenty-one".