218228323311 has 20 divisors (see below), whose sum is σ = 326008993200. Its totient is φ = 145479481056.

The previous prime is 218228323303. The next prime is 218228323361. The reversal of 218228323311 is 113323822812.

218228323311 is a `hidden beast` number, since 2 + 18 + 2 + 2 + 8 + 323 + 311 = 666.

It is not a de Polignac number, because 218228323311 - 2³ = 218228323303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218228323361) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2770155 + ... + 2847843.

It is an arithmetic number, because the mean of its divisors is an integer number (16300449660).

Almost surely, 2^218228323311 is an apocalyptic number.

218228323311 is a deficient number, since it is larger than the sum of its proper divisors (107780669889).

218228323311 is an equidigital number, since it uses as much as digits as its factorization.

218228323311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112380 (or 112371 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The spelling of 218228323311 in words is "two hundred eighteen billion, two hundred twenty-eight million, three hundred twenty-three thousand, three hundred eleven".