347428975217 has 2 divisors, whose sum is σ = 347428975218. Its totient is φ = 347428975216.

The previous prime is 347428975169. The next prime is 347428975259. The reversal of 347428975217 is 712579824743.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180900504976 + 166528470241 = 425324^2 + 408079^2 .

It is a cyclic number.

It is not a de Polignac number, because 347428975217 - 2³⁸ = 72551068273 is a prime.

It is not a weakly prime, because it can be changed into another prime (347428972217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173714487608 + 173714487609.

It is an arithmetic number, because the mean of its divisors is an integer number (173714487609).

Almost surely, 2^347428975217 is an apocalyptic number.

It is an amenable number.

347428975217 is a deficient number, since it is larger than the sum of its proper divisors (1).

347428975217 is an equidigital number, since it uses as much as digits as its factorization.

347428975217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23708160, while the sum is 59.

The spelling of 347428975217 in words is "three hundred forty-seven billion, four hundred twenty-eight million, nine hundred seventy-five thousand, two hundred seventeen".