431042543 has 2 divisors, whose sum is σ = 431042544. Its totient is φ = 431042542.

The previous prime is 431042483. The next prime is 431042617. The reversal of 431042543 is 345240134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431042543 - 2¹⁶ = 430977007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431042243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215521271 + 215521272.

It is an arithmetic number, because the mean of its divisors is an integer number (215521272).

Almost surely, 2^431042543 is an apocalyptic number.

431042543 is a deficient number, since it is larger than the sum of its proper divisors (1).

431042543 is an equidigital number, since it uses as much as digits as its factorization.

431042543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 431042543 is about 20761.5640788453. The cubic root of 431042543 is about 755.3937352466.

Adding to 431042543 its reverse (345240134), we get a palindrome (776282677).

The spelling of 431042543 in words is "four hundred thirty-one million, forty-two thousand, five hundred forty-three".