3231521213 has 2 divisors, whose sum is σ = 3231521214. Its totient is φ = 3231521212.

The previous prime is 3231521123. The next prime is 3231521233. The reversal of 3231521213 is 3121251323.

3231521213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (3231521123) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3226012804 + 5508409 = 56798^2 + 2347^2 .

It is a cyclic number.

It is not a de Polignac number, because 3231521213 - 2¹⁶ = 3231455677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3231521233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1615760606 + 1615760607.

It is an arithmetic number, because the mean of its divisors is an integer number (1615760607).

Almost surely, 2^3231521213 is an apocalyptic number.

It is an amenable number.

3231521213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3231521213 is an equidigital number, since it uses as much as digits as its factorization.

3231521213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 3231521213 is about 56846.4705412746. The cubic root of 3231521213 is about 1478.4353462202.

Adding to 3231521213 its reverse (3121251323), we get a palindrome (6352772536).

The spelling of 3231521213 in words is "three billion, two hundred thirty-one million, five hundred twenty-one thousand, two hundred thirteen".