423223217 has 2 divisors, whose sum is σ = 423223218. Its totient is φ = 423223216.

The previous prime is 423223201. The next prime is 423223237. The reversal of 423223217 is 712322324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283888801 + 139334416 = 16849^2 + 11804^2 .

It is a cyclic number.

It is not a de Polignac number, because 423223217 - 2⁴ = 423223201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423223237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211611608 + 211611609.

It is an arithmetic number, because the mean of its divisors is an integer number (211611609).

Almost surely, 2^423223217 is an apocalyptic number.

It is an amenable number.

423223217 is a deficient number, since it is larger than the sum of its proper divisors (1).

423223217 is an equidigital number, since it uses as much as digits as its factorization.

423223217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 26.

The square root of 423223217 is about 20572.3896764571. The cubic root of 423223217 is about 750.7980938345.

The spelling of 423223217 in words is "four hundred twenty-three million, two hundred twenty-three thousand, two hundred seventeen".