217348483291 has 2 divisors, whose sum is σ = 217348483292. Its totient is φ = 217348483290.

The previous prime is 217348483243. The next prime is 217348483309. The reversal of 217348483291 is 192384843712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 217348483291 - 2¹⁵ = 217348450523 is a prime.

It is not a weakly prime, because it can be changed into another prime (217348483591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108674241645 + 108674241646.

It is an arithmetic number, because the mean of its divisors is an integer number (108674241646).

Almost surely, 2^217348483291 is an apocalyptic number.

217348483291 is a deficient number, since it is larger than the sum of its proper divisors (1).

217348483291 is an equidigital number, since it uses as much as digits as its factorization.

217348483291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 52.

The spelling of 217348483291 in words is "two hundred seventeen billion, three hundred forty-eight million, four hundred eighty-three thousand, two hundred ninety-one".