219105321317 has 16 divisors (see below), whose sum is σ = 228161453184. Its totient is φ = 210231000000.

The previous prime is 219105321263. The next prime is 219105321319. The reversal of 219105321317 is 713123501912.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219105321317 is a prime.

It is a super-2 number, since 2×219105321317² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219105321319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821192 + ... + 1054782.

It is an arithmetic number, because the mean of its divisors is an integer number (14260090824).

Almost surely, 2^219105321317 is an apocalyptic number.

It is an amenable number.

219105321317 is a deficient number, since it is larger than the sum of its proper divisors (9056131867).

219105321317 is a wasteful number, since it uses less digits than its factorization.

219105321317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233980.

The product of its (nonzero) digits is 11340, while the sum is 35.

The spelling of 219105321317 in words is "two hundred nineteen billion, one hundred five million, three hundred twenty-one thousand, three hundred seventeen".