213017 has 4 divisors (see below), whose sum is σ = 243456. Its totient is φ = 182580.

The previous prime is 212999. The next prime is 213019. The reversal of 213017 is 710312.

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 213017 - 2¹⁶ = 147481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212992 and 213010.

It is not an unprimeable number, because it can be changed into a prime (213019) 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, 15209 + ... + 15222.

It is an arithmetic number, because the mean of its divisors is an integer number (60864).

2²¹³⁰¹⁷ is an apocalyptic number.

It is an amenable number.

213017 is a deficient number, since it is larger than the sum of its proper divisors (30439).

213017 is an equidigital number, since it uses as much as digits as its factorization.

213017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30438.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 213017 is about 461.5376474352. The cubic root of 213017 is about 59.7225149756.

Adding to 213017 its reverse (710312), we get a palindrome (923329).

The spelling of 213017 in words is "two hundred thirteen thousand, seventeen".