20006323 has 4 divisors (see below), whose sum is σ = 20051928. Its totient is φ = 19960720.

The previous prime is 20006279. The next prime is 20006339. The reversal of 20006323 is 32360002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20006323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20006297 and 20006306.

It is not an unprimeable number, because it can be changed into a prime (20006023) 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, 22138 + ... + 23023.

It is an arithmetic number, because the mean of its divisors is an integer number (5012982).

Almost surely, 2^20006323 is an apocalyptic number.

20006323 is a deficient number, since it is larger than the sum of its proper divisors (45605).

20006323 is an equidigital number, since it uses as much as digits as its factorization.

20006323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45604.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 20006323 is about 4472.8428320253. The cubic root of 20006323 is about 271.4703640831.

Adding to 20006323 its reverse (32360002), we get a palindrome (52366325).

The spelling of 20006323 in words is "twenty million, six thousand, three hundred twenty-three".