212339 has 4 divisors (see below), whose sum is σ = 217560. Its totient is φ = 207120.

The previous prime is 212297. The next prime is 212353. The reversal of 212339 is 933212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212339 is a prime.

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 212339.

It is not an unprimeable number, because it can be changed into a prime (212369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2549 + ... + 2630.

It is an arithmetic number, because the mean of its divisors is an integer number (54390).

2²¹²³³⁹ is an apocalyptic number.

212339 is a deficient number, since it is larger than the sum of its proper divisors (5221).

212339 is an equidigital number, since it uses as much as digits as its factorization.

212339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220.

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

The square root of 212339 is about 460.8025607568. The cubic root of 212339 is about 59.6590851382.

The spelling of 212339 in words is "two hundred twelve thousand, three hundred thirty-nine".