431243534123 has 2 divisors, whose sum is σ = 431243534124. Its totient is φ = 431243534122.

The previous prime is 431243534021. The next prime is 431243534167. The reversal of 431243534123 is 321435342134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431243534123 - 2¹⁰ = 431243533099 is a prime.

It is not a weakly prime, because it can be changed into another prime (431243534923) 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, 215621767061 + 215621767062.

It is an arithmetic number, because the mean of its divisors is an integer number (215621767062).

Almost surely, 2^431243534123 is an apocalyptic number.

431243534123 is a deficient number, since it is larger than the sum of its proper divisors (1).

431243534123 is an equidigital number, since it uses as much as digits as its factorization.

431243534123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 35.

Adding to 431243534123 its reverse (321435342134), we get a palindrome (752678876257).

The spelling of 431243534123 in words is "four hundred thirty-one billion, two hundred forty-three million, five hundred thirty-four thousand, one hundred twenty-three".