209213 has 2 divisors, whose sum is σ = 209214. Its totient is φ = 209212.

The previous prime is 209203. The next prime is 209221. The reversal of 209213 is 312902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120409 + 88804 = 347^2 + 298^2 .

It is a cyclic number.

It is not a de Polignac number, because 209213 - 2¹⁰ = 208189 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 209191 and 209200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104606 + 104607.

It is an arithmetic number, because the mean of its divisors is an integer number (104607).

2²⁰⁹²¹³ is an apocalyptic number.

It is an amenable number.

209213 is a deficient number, since it is larger than the sum of its proper divisors (1).

209213 is an equidigital number, since it uses as much as digits as its factorization.

209213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 209213 is about 457.3980760782. The cubic root of 209213 is about 59.3648747277.

The spelling of 209213 in words is "two hundred nine thousand, two hundred thirteen".