20130217 has 8 divisors (see below), whose sum is σ = 20636096. Its totient is φ = 19630512.

The previous prime is 20130203. The next prime is 20130223. The reversal of 20130217 is 71203102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20130217 - 2¹¹ = 20128169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20130217.

It is not an unprimeable number, because it can be changed into a prime (20131217) 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, 5443 + ... + 8359.

It is an arithmetic number, because the mean of its divisors is an integer number (2579512).

Almost surely, 2^20130217 is an apocalyptic number.

It is an amenable number.

20130217 is a deficient number, since it is larger than the sum of its proper divisors (505879).

20130217 is a wasteful number, since it uses less digits than its factorization.

20130217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 20130217 is about 4486.6710376403. The cubic root of 20130217 is about 272.0295932695.

Adding to 20130217 its reverse (71203102), we get a palindrome (91333319).

The spelling of 20130217 in words is "twenty million, one hundred thirty thousand, two hundred seventeen".