212329 has 4 divisors (see below), whose sum is σ = 228676. Its totient is φ = 195984.

The previous prime is 212297. The next prime is 212353. The reversal of 212329 is 923212.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23104 + 189225 = 152^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 212329 - 2⁵ = 212297 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8154 + ... + 8179.

It is an arithmetic number, because the mean of its divisors is an integer number (57169).

2²¹²³²⁹ is an apocalyptic number.

It is an amenable number.

212329 is a deficient number, since it is larger than the sum of its proper divisors (16347).

212329 is a wasteful number, since it uses less digits than its factorization.

212329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16346.

The product of its digits is 216, while the sum is 19.

The square root of 212329 is about 460.7917099949. The cubic root of 212329 is about 59.6581485851.

The spelling of 212329 in words is "two hundred twelve thousand, three hundred twenty-nine".