217407312383 has 2 divisors, whose sum is σ = 217407312384. Its totient is φ = 217407312382.

The previous prime is 217407312329. The next prime is 217407312401. The reversal of 217407312383 is 383213704712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 217407312383 - 2⁸ = 217407312127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 217407312383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217407312313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108703656191 + 108703656192.

It is an arithmetic number, because the mean of its divisors is an integer number (108703656192).

Almost surely, 2^217407312383 is an apocalyptic number.

217407312383 is a deficient number, since it is larger than the sum of its proper divisors (1).

217407312383 is an equidigital number, since it uses as much as digits as its factorization.

217407312383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 217407312383 in words is "two hundred seventeen billion, four hundred seven million, three hundred twelve thousand, three hundred eighty-three".