20043323 has 4 divisors (see below), whose sum is σ = 21222360. Its totient is φ = 18864288.

The previous prime is 20043311. The next prime is 20043337. The reversal of 20043323 is 32334002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32334002 = 2 ⋅16167001.

It is not a de Polignac number, because 20043323 - 2⁶ = 20043259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1179019 = 20043323 / (2 + 0 + 0 + 4 + 3 + 3 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20043343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589493 + ... + 589526.

It is an arithmetic number, because the mean of its divisors is an integer number (5305590).

Almost surely, 2^20043323 is an apocalyptic number.

20043323 is a deficient number, since it is larger than the sum of its proper divisors (1179037).

20043323 is a wasteful number, since it uses less digits than its factorization.

20043323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179036.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 20043323 is about 4476.9769934633. The cubic root of 20043323 is about 271.6376148357.

Adding to 20043323 its reverse (32334002), we get a palindrome (52377325).

The spelling of 20043323 in words is "twenty million, forty-three thousand, three hundred twenty-three".