3213200321 has 4 divisors (see below), whose sum is σ = 3215541972. Its totient is φ = 3210858672.

The previous prime is 3213200281. The next prime is 3213200363. The reversal of 3213200321 is 1230023123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1230023123 = 7 ⋅175717589.

It can be written as a sum of positive squares in 2 ways, for example, as 2983344400 + 229855921 = 54620^2 + 15161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3213200321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3213200321.

It is not an unprimeable number, because it can be changed into a prime (3213200521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1168766 + ... + 1171511.

It is an arithmetic number, because the mean of its divisors is an integer number (803885493).

Almost surely, 2^3213200321 is an apocalyptic number.

It is an amenable number.

3213200321 is a deficient number, since it is larger than the sum of its proper divisors (2341651).

3213200321 is a wasteful number, since it uses less digits than its factorization.

3213200321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341650.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3213200321 is about 56685.0978741327. The cubic root of 3213200321 is about 1475.6360862377.

Adding to 3213200321 its reverse (1230023123), we get a palindrome (4443223444).

The spelling of 3213200321 in words is "three billion, two hundred thirteen million, two hundred thousand, three hundred twenty-one".