213189 has 8 divisors (see below), whose sum is σ = 286560. Its totient is φ = 140976.

The previous prime is 213181. The next prime is 213193. The reversal of 213189 is 981312.

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

It is not a de Polignac number, because 213189 - 2³ = 213181 is a prime.

It is an Ulam number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213181) 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, 339 + ... + 735.

It is an arithmetic number, because the mean of its divisors is an integer number (35820).

2²¹³¹⁸⁹ is an apocalyptic number.

It is an amenable number.

213189 is a deficient number, since it is larger than the sum of its proper divisors (73371).

213189 is a wasteful number, since it uses less digits than its factorization.

213189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579.

The product of its digits is 432, while the sum is 24.

The square root of 213189 is about 461.7239434987. The cubic root of 213189 is about 59.7385849122.

The spelling of 213189 in words is "two hundred thirteen thousand, one hundred eighty-nine".