20335223 has 2 divisors, whose sum is σ = 20335224. Its totient is φ = 20335222.

The previous prime is 20335219. The next prime is 20335229. The reversal of 20335223 is 32253302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20335223 - 2² = 20335219 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20335195 and 20335204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20335229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10167611 + 10167612.

It is an arithmetic number, because the mean of its divisors is an integer number (10167612).

Almost surely, 2^20335223 is an apocalyptic number.

20335223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20335223 is an equidigital number, since it uses as much as digits as its factorization.

20335223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 20335223 is about 4509.4592802242. The cubic root of 20335223 is about 272.9499252931.

Adding to 20335223 its reverse (32253302), we get a palindrome (52588525).

The spelling of 20335223 in words is "twenty million, three hundred thirty-five thousand, two hundred twenty-three".