3232313221 has 2 divisors, whose sum is σ = 3232313222. Its totient is φ = 3232313220.

The previous prime is 3232313167. The next prime is 3232313243. The reversal of 3232313221 is 1223132323.

It is an a-pointer prime, because the next prime (3232313243) can be obtained adding 3232313221 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2606613025 + 625700196 = 51055^2 + 25014^2 .

It is a cyclic number.

It is not a de Polignac number, because 3232313221 - 2²⁷ = 3098095493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3232313192 and 3232313201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3232313261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1616156610 + 1616156611.

It is an arithmetic number, because the mean of its divisors is an integer number (1616156611).

Almost surely, 2^3232313221 is an apocalyptic number.

It is an amenable number.

3232313221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3232313221 is an equidigital number, since it uses as much as digits as its factorization.

3232313221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 22.

The square root of 3232313221 is about 56853.4363165499. The cubic root of 3232313221 is about 1478.5561187498.

Adding to 3232313221 its reverse (1223132323), we get a palindrome (4455445544).

The spelling of 3232313221 in words is "three billion, two hundred thirty-two million, three hundred thirteen thousand, two hundred twenty-one".