20007223 has 2 divisors, whose sum is σ = 20007224. Its totient is φ = 20007222.

The previous prime is 20007203. The next prime is 20007257. The reversal of 20007223 is 32270002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20007223 - 2¹⁷ = 19876151 is a prime.

It is equal to p_1271041 and since 20007223 and 1271041 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 20007197 and 20007206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20007203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10003611 + 10003612.

It is an arithmetic number, because the mean of its divisors is an integer number (10003612).

Almost surely, 2^20007223 is an apocalyptic number.

20007223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20007223 is an equidigital number, since it uses as much as digits as its factorization.

20007223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 20007223 is about 4472.9434380506. The cubic root of 20007223 is about 271.4744347906.

Adding to 20007223 its reverse (32270002), we get a palindrome (52277225).

The spelling of 20007223 in words is "twenty million, seven thousand, two hundred twenty-three".