213065 has 8 divisors (see below), whose sum is σ = 261888. Its totient is φ = 166320.

The previous prime is 213043. The next prime is 213067. The reversal of 213065 is 560312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213065 - 2¹⁴ = 196681 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213067) 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, 281 + ... + 710.

It is an arithmetic number, because the mean of its divisors is an integer number (32736).

2²¹³⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

213065 is a deficient number, since it is larger than the sum of its proper divisors (48823).

213065 is an equidigital number, since it uses as much as digits as its factorization.

213065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 213065 is about 461.5896445979. The cubic root of 213065 is about 59.7270004790.

Adding to 213065 its reverse (560312), we get a palindrome (773377).

The spelling of 213065 in words is "two hundred thirteen thousand, sixty-five".