321200213 has 4 divisors (see below), whose sum is σ = 321255360. Its totient is φ = 321145068.

The previous prime is 321200179. The next prime is 321200249. The reversal of 321200213 is 312002123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312002123 = 283 ⋅1102481.

It is a cyclic number.

It is not a de Polignac number, because 321200213 - 2¹⁰ = 321199189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321200413) 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 3 ways as a sum of consecutive naturals, for example, 17645 + ... + 30882.

It is an arithmetic number, because the mean of its divisors is an integer number (80313840).

Almost surely, 2^321200213 is an apocalyptic number.

It is an amenable number.

321200213 is a deficient number, since it is larger than the sum of its proper divisors (55147).

321200213 is an equidigital number, since it uses as much as digits as its factorization.

321200213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55146.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 321200213 is about 17922.0593961743. The cubic root of 321200213 is about 684.8444515121.

Adding to 321200213 its reverse (312002123), we get a palindrome (633202336).

The spelling of 321200213 in words is "three hundred twenty-one million, two hundred thousand, two hundred thirteen".