424423213 has 2 divisors, whose sum is σ = 424423214. Its totient is φ = 424423212.

The previous prime is 424423187. The next prime is 424423229. The reversal of 424423213 is 312324424.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 422179209 + 2244004 = 20547^2 + 1498^2 .

It is a cyclic number.

It is not a de Polignac number, because 424423213 - 2⁹ = 424422701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424423283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212211606 + 212211607.

It is an arithmetic number, because the mean of its divisors is an integer number (212211607).

Almost surely, 2^424423213 is an apocalyptic number.

It is an amenable number.

424423213 is a deficient number, since it is larger than the sum of its proper divisors (1).

424423213 is an equidigital number, since it uses as much as digits as its factorization.

424423213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 25.

The square root of 424423213 is about 20601.5342389833. The cubic root of 424423213 is about 751.5070219663.

Adding to 424423213 its reverse (312324424), we get a palindrome (736747637).

The spelling of 424423213 in words is "four hundred twenty-four million, four hundred twenty-three thousand, two hundred thirteen".