431312430173 has 2 divisors, whose sum is σ = 431312430174. Its totient is φ = 431312430172.

The previous prime is 431312430083. The next prime is 431312430181. The reversal of 431312430173 is 371034213134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343206162244 + 88106267929 = 585838^2 + 296827^2 .

It is a cyclic number.

It is not a de Polignac number, because 431312430173 - 2¹⁸ = 431312168029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431312480173) 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, 215656215086 + 215656215087.

It is an arithmetic number, because the mean of its divisors is an integer number (215656215087).

Almost surely, 2^431312430173 is an apocalyptic number.

It is an amenable number.

431312430173 is a deficient number, since it is larger than the sum of its proper divisors (1).

431312430173 is an equidigital number, since it uses as much as digits as its factorization.

431312430173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 431312430173 in words is "four hundred thirty-one billion, three hundred twelve million, four hundred thirty thousand, one hundred seventy-three".