20354317 has 8 divisors (see below), whose sum is σ = 21168000. Its totient is φ = 19548144.

The previous prime is 20354311. The next prime is 20354357. The reversal of 20354317 is 71345302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20354317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20354291 and 20354300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354311) 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, 4008 + ... + 7534.

It is an arithmetic number, because the mean of its divisors is an integer number (2646000).

Almost surely, 2^20354317 is an apocalyptic number.

It is an amenable number.

20354317 is a deficient number, since it is larger than the sum of its proper divisors (813683).

20354317 is a wasteful number, since it uses less digits than its factorization.

20354317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20354317 is about 4511.5758887555. The cubic root of 20354317 is about 273.0353284304.

Adding to 20354317 its reverse (71345302), we get a palindrome (91699619).

The spelling of 20354317 in words is "twenty million, three hundred fifty-four thousand, three hundred seventeen".