20322343 has 4 divisors (see below), whose sum is σ = 21391960. Its totient is φ = 19252728.

The previous prime is 20322331. The next prime is 20322353. The reversal of 20322343 is 34322302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20322343 - 2¹⁷ = 20191271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1069597 = 20322343 / (2 + 0 + 3 + 2 + 2 + 3 + 4 + 3).

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 20322343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534780 + ... + 534817.

It is an arithmetic number, because the mean of its divisors is an integer number (5347990).

Almost surely, 2^20322343 is an apocalyptic number.

20322343 is a deficient number, since it is larger than the sum of its proper divisors (1069617).

20322343 is a wasteful number, since it uses less digits than its factorization.

20322343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069616.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 20322343 is about 4508.0309448805. The cubic root of 20322343 is about 272.8922857721.

Adding to 20322343 its reverse (34322302), we get a palindrome (54644645).

The spelling of 20322343 in words is "twenty million, three hundred twenty-two thousand, three hundred forty-three".