20302223 has 2 divisors, whose sum is σ = 20302224. Its totient is φ = 20302222.

The previous prime is 20302211. The next prime is 20302259. The reversal of 20302223 is 32220302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20302223 - 2⁴ = 20302207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20302198 and 20302207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20302283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151111 + 10151112.

It is an arithmetic number, because the mean of its divisors is an integer number (10151112).

Almost surely, 2^20302223 is an apocalyptic number.

20302223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302223 is an equidigital number, since it uses as much as digits as its factorization.

20302223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 20302223 is about 4505.7988192994. The cubic root of 20302223 is about 272.8021976400.

Adding to 20302223 its reverse (32220302), we get a palindrome (52522525).

The spelling of 20302223 in words is "twenty million, three hundred two thousand, two hundred twenty-three".