434243213 has 4 divisors (see below), whose sum is σ = 434327388. Its totient is φ = 434159040.

The previous prime is 434243207. The next prime is 434243237. The reversal of 434243213 is 312342434.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 280160644 + 154082569 = 16738^2 + 12413^2 .

It is a cyclic number.

It is not a de Polignac number, because 434243213 - 2⁶ = 434243149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434243263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33806 + ... + 44847.

It is an arithmetic number, because the mean of its divisors is an integer number (108581847).

Almost surely, 2^434243213 is an apocalyptic number.

It is an amenable number.

434243213 is a deficient number, since it is larger than the sum of its proper divisors (84175).

434243213 is an equidigital number, since it uses as much as digits as its factorization.

434243213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84174.

The product of its digits is 6912, while the sum is 26.

The square root of 434243213 is about 20838.5031372217. The cubic root of 434243213 is about 757.2588305950.

Adding to 434243213 its reverse (312342434), we get a palindrome (746585647).

The spelling of 434243213 in words is "four hundred thirty-four million, two hundred forty-three thousand, two hundred thirteen".