20001317 has 8 divisors (see below), whose sum is σ = 23416512. Its totient is φ = 16725600.

The previous prime is 20001307. The next prime is 20001341. The reversal of 20001317 is 71310002.

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 20001317 - 2⁴ = 20001301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001307) 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, 34559 + ... + 35132.

It is an arithmetic number, because the mean of its divisors is an integer number (2927064).

Almost surely, 2^20001317 is an apocalyptic number.

It is an amenable number.

20001317 is a deficient number, since it is larger than the sum of its proper divisors (3415195).

20001317 is an equidigital number, since it uses as much as digits as its factorization.

20001317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69739.

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

The square root of 20001317 is about 4472.2831976520. The cubic root of 20001317 is about 271.4477196754.

Adding to 20001317 its reverse (71310002), we get a palindrome (91311319).

The spelling of 20001317 in words is "twenty million, one thousand, three hundred seventeen".