213239 has 8 divisors (see below), whose sum is σ = 235200. Its totient is φ = 192096.

The previous prime is 213229. The next prime is 213247. The reversal of 213239 is 932312.

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 213239 - 2⁴ = 213223 is a prime.

It is a super-2 number, since 2×213239² = 90941742242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213209) 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, 437 + ... + 785.

It is an arithmetic number, because the mean of its divisors is an integer number (29400).

2²¹³²³⁹ is an apocalyptic number.

213239 is a deficient number, since it is larger than the sum of its proper divisors (21961).

213239 is a wasteful number, since it uses less digits than its factorization.

213239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409.

The product of its digits is 324, while the sum is 20.

The square root of 213239 is about 461.7780852314. The cubic root of 213239 is about 59.7432547838.

The spelling of 213239 in words is "two hundred thirteen thousand, two hundred thirty-nine".