20343017 has 8 divisors (see below), whose sum is σ = 21278400. Its totient is φ = 19411920.

The previous prime is 20342981. The next prime is 20343019. The reversal of 20343017 is 71034302.

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-20343017 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 20343017.

It is not an unprimeable number, because it can be changed into a prime (20343019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12359 + ... + 13907.

It is an arithmetic number, because the mean of its divisors is an integer number (2659800).

Almost surely, 2^20343017 is an apocalyptic number.

It is an amenable number.

20343017 is a deficient number, since it is larger than the sum of its proper divisors (935383).

20343017 is a wasteful number, since it uses less digits than its factorization.

20343017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20343017 is about 4510.3233808675. The cubic root of 20343017 is about 272.9847925443.

Adding to 20343017 its reverse (71034302), we get a palindrome (91377319).

The spelling of 20343017 in words is "twenty million, three hundred forty-three thousand, seventeen".