9321213 has 8 divisors (see below), whose sum is σ = 13558176. Its totient is φ = 5649200.

The previous prime is 9321199. The next prime is 9321251. The reversal of 9321213 is 3121239.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9321213 - 2¹⁶ = 9255677 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9321213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9321283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141198 + ... + 141263.

It is an arithmetic number, because the mean of its divisors is an integer number (1694772).

Almost surely, 2^9321213 is an apocalyptic number.

It is an amenable number.

9321213 is a deficient number, since it is larger than the sum of its proper divisors (4236963).

9321213 is a wasteful number, since it uses less digits than its factorization.

9321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282475.

The product of its digits is 324, while the sum is 21.

The square root of 9321213 is about 3053.0661637115. The cubic root of 9321213 is about 210.4541418902.

It can be divided in two parts, 932 and 1213, that added together give a triangular number (2145 = T₆₅).

The spelling of 9321213 in words is "nine million, three hundred twenty-one thousand, two hundred thirteen".