213303 has 8 divisors (see below), whose sum is σ = 287728. Its totient is φ = 140544.

The previous prime is 213289. The next prime is 213307. The reversal of 213303 is 303312.

It is a happy number.

213303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 213303 - 2⁴ = 213287 is a prime.

It is a Duffinian number.

213303 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213307) 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, 76 + ... + 657.

It is an arithmetic number, because the mean of its divisors is an integer number (35966).

2²¹³³⁰³ is an apocalyptic number.

213303 is a deficient number, since it is larger than the sum of its proper divisors (74425).

213303 is an equidigital number, since it uses as much as digits as its factorization.

213303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 213303 is about 461.8473773878. The cubic root of 213303 is about 59.7492311544.

Adding to 213303 its reverse (303312), we get a palindrome (516615).

Subtracting 213303 from its reverse (303312), we obtain a palindrome (90009).

The spelling of 213303 in words is "two hundred thirteen thousand, three hundred three".