209113 has 4 divisors (see below), whose sum is σ = 211840. Its totient is φ = 206388.

The previous prime is 209089. The next prime is 209123. The reversal of 209113 is 311902.

209113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 209113 - 2¹⁷ = 78041 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209123) 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, 1245 + ... + 1402.

It is an arithmetic number, because the mean of its divisors is an integer number (52960).

2²⁰⁹¹¹³ is an apocalyptic number.

It is an amenable number.

209113 is a deficient number, since it is larger than the sum of its proper divisors (2727).

209113 is an equidigital number, since it uses as much as digits as its factorization.

209113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 209113 is about 457.2887490416. The cubic root of 209113 is about 59.3554147777.

The spelling of 209113 in words is "two hundred nine thousand, one hundred thirteen".