213369 has 8 divisors (see below), whose sum is σ = 306432. Its totient is φ = 131280.

The previous prime is 213361. The next prime is 213383. The reversal of 213369 is 963312.

213369 is digitally balanced in base 2 and base 7, because in such bases 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 213369 - 2³ = 213361 is a prime.

It is a super-2 number, since 2×213369² = 91052660322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

213369 is strictly pandigital in base 7.

It is a Curzon number.

213369 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (213361) 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, 2697 + ... + 2774.

It is an arithmetic number, because the mean of its divisors is an integer number (38304).

2²¹³³⁶⁹ is an apocalyptic number.

It is an amenable number.

213369 is a deficient number, since it is larger than the sum of its proper divisors (93063).

213369 is a wasteful number, since it uses less digits than its factorization.

213369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487.

The product of its digits is 972, while the sum is 24.

The square root of 213369 is about 461.9188240373. The cubic root of 213369 is about 59.7553930346.

The spelling of 213369 in words is "two hundred thirteen thousand, three hundred sixty-nine".