423500213 has 2 divisors, whose sum is σ = 423500214. Its totient is φ = 423500212.

The previous prime is 423500197. The next prime is 423500237. The reversal of 423500213 is 312005324.

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., 387223684 + 36276529 = 19678^2 + 6023^2 .

It is a cyclic number.

It is not a de Polignac number, because 423500213 - 2⁴ = 423500197 is a prime.

It is a super-2 number, since 2×423500213² = 358704860822090738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423500293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211750106 + 211750107.

It is an arithmetic number, because the mean of its divisors is an integer number (211750107).

Almost surely, 2^423500213 is an apocalyptic number.

It is an amenable number.

423500213 is a deficient number, since it is larger than the sum of its proper divisors (1).

423500213 is an equidigital number, since it uses as much as digits as its factorization.

423500213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 423500213 is about 20579.1208024055. The cubic root of 423500213 is about 750.9618551042.

Adding to 423500213 its reverse (312005324), we get a palindrome (735505537).

The spelling of 423500213 in words is "four hundred twenty-three million, five hundred thousand, two hundred thirteen".