3221344213 has 4 divisors (see below), whose sum is σ = 3230470188. Its totient is φ = 3212218240.

The previous prime is 3221344169. The next prime is 3221344237. The reversal of 3221344213 is 3124431223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3124431223 = 167 ⋅18709169.

It can be written as a sum of positive squares in 2 ways, for example, as 418488849 + 2802855364 = 20457^2 + 52942^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221344213 - 2⁹ = 3221343701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221324213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4562458 + ... + 4563163.

It is an arithmetic number, because the mean of its divisors is an integer number (807617547).

Almost surely, 2^3221344213 is an apocalyptic number.

It is an amenable number.

3221344213 is a deficient number, since it is larger than the sum of its proper divisors (9125975).

3221344213 is an equidigital number, since it uses as much as digits as its factorization.

3221344213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9125974.

The product of its digits is 3456, while the sum is 25.

The square root of 3221344213 is about 56756.8869213244. The cubic root of 3221344213 is about 1476.8817065152.

Adding to 3221344213 its reverse (3124431223), we get a palindrome (6345775436).

The spelling of 3221344213 in words is "three billion, two hundred twenty-one million, three hundred forty-four thousand, two hundred thirteen".