431329744217 has 2 divisors, whose sum is σ = 431329744218. Its totient is φ = 431329744216.

The previous prime is 431329744211. The next prime is 431329744231. The reversal of 431329744217 is 712447923134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 428480213056 + 2849531161 = 654584^2 + 53381^2 .

It is a cyclic number.

It is not a de Polignac number, because 431329744217 - 2³² = 427034776921 is a prime.

It is not a weakly prime, because it can be changed into another prime (431329744211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215664872108 + 215664872109.

It is an arithmetic number, because the mean of its divisors is an integer number (215664872109).

Almost surely, 2^431329744217 is an apocalyptic number.

It is an amenable number.

431329744217 is a deficient number, since it is larger than the sum of its proper divisors (1).

431329744217 is an equidigital number, since it uses as much as digits as its factorization.

431329744217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 47.

The spelling of 431329744217 in words is "four hundred thirty-one billion, three hundred twenty-nine million, seven hundred forty-four thousand, two hundred seventeen".