213393 has 8 divisors (see below), whose sum is σ = 288288. Its totient is φ = 140384.

The previous prime is 213391. The next prime is 213397. The reversal of 213393 is 393312.

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 213393 - 2¹ = 213391 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180 + ... + 677.

It is an arithmetic number, because the mean of its divisors is an integer number (36036).

2²¹³³⁹³ is an apocalyptic number.

It is an amenable number.

213393 is a deficient number, since it is larger than the sum of its proper divisors (74895).

213393 is an equidigital number, since it uses as much as digits as its factorization.

213393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943.

The product of its digits is 486, while the sum is 21.

The square root of 213393 is about 461.9448018974. The cubic root of 213393 is about 59.7576334032.

It can be divided in two parts, 213 and 393, that added together give a palindrome (606).

The spelling of 213393 in words is "two hundred thirteen thousand, three hundred ninety-three".