531434243 has 2 divisors, whose sum is σ = 531434244. Its totient is φ = 531434242.

The previous prime is 531434227. The next prime is 531434261. The reversal of 531434243 is 342434135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531434243 - 2⁴ = 531434227 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (531434203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265717121 + 265717122.

It is an arithmetic number, because the mean of its divisors is an integer number (265717122).

Almost surely, 2^531434243 is an apocalyptic number.

531434243 is a deficient number, since it is larger than the sum of its proper divisors (1).

531434243 is an equidigital number, since it uses as much as digits as its factorization.

531434243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 29.

The square root of 531434243 is about 23052.8575885941. The cubic root of 531434243 is about 809.9965670738.

Adding to 531434243 its reverse (342434135), we get a palindrome (873868378).

The spelling of 531434243 in words is "five hundred thirty-one million, four hundred thirty-four thousand, two hundred forty-three".