421431050317 has 2 divisors, whose sum is σ = 421431050318. Its totient is φ = 421431050316.

The previous prime is 421431050269. The next prime is 421431050347. The reversal of 421431050317 is 713050134124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269787786921 + 151643263396 = 519411^2 + 389414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421431050317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421431050347) 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, 210715525158 + 210715525159.

It is an arithmetic number, because the mean of its divisors is an integer number (210715525159).

Almost surely, 2^421431050317 is an apocalyptic number.

It is an amenable number.

421431050317 is a deficient number, since it is larger than the sum of its proper divisors (1).

421431050317 is an equidigital number, since it uses as much as digits as its factorization.

421431050317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 421431050317 in words is "four hundred twenty-one billion, four hundred thirty-one million, fifty thousand, three hundred seventeen".