20043321 has 8 divisors (see below), whose sum is σ = 27646080. Its totient is φ = 12901392.

The previous prime is 20043311. The next prime is 20043337. The reversal of 20043321 is 12334002.

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

It is not a de Polignac number, because 20043321 - 2²² = 15849017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20043321.

It is not an unprimeable number, because it can be changed into a prime (20043311) 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, 115105 + ... + 115278.

It is an arithmetic number, because the mean of its divisors is an integer number (3455760).

Almost surely, 2^20043321 is an apocalyptic number.

It is an amenable number.

20043321 is a deficient number, since it is larger than the sum of its proper divisors (7602759).

20043321 is a wasteful number, since it uses less digits than its factorization.

20043321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230415.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20043321 is about 4476.9767700983. The cubic root of 20043321 is about 271.6376058007.

Adding to 20043321 its reverse (12334002), we get a palindrome (32377323).

The spelling of 20043321 in words is "twenty million, forty-three thousand, three hundred twenty-one".