431345443 has 2 divisors, whose sum is σ = 431345444. Its totient is φ = 431345442.

The previous prime is 431345417. The next prime is 431345479. The reversal of 431345443 is 344543134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431345443 - 2¹³ = 431337251 is a prime.

It is not a weakly prime, because it can be changed into another prime (431345483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215672721 + 215672722.

It is an arithmetic number, because the mean of its divisors is an integer number (215672722).

Almost surely, 2^431345443 is an apocalyptic number.

431345443 is a deficient number, since it is larger than the sum of its proper divisors (1).

431345443 is an equidigital number, since it uses as much as digits as its factorization.

431345443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 31.

The square root of 431345443 is about 20768.8575275579. The cubic root of 431345443 is about 755.5706359503.

Adding to 431345443 its reverse (344543134), we get a palindrome (775888577).

The spelling of 431345443 in words is "four hundred thirty-one million, three hundred forty-five thousand, four hundred forty-three".