2216868831 has 24 divisors (see below), whose sum is σ = 3338018320. Its totient is φ = 1470223872.

The previous prime is 2216868793. The next prime is 2216868839. The reversal of 2216868831 is 1388686122.

It is not a de Polignac number, because 2216868831 - 2⁶ = 2216868767 is a prime.

It is a super-2 number, since 2×2216868831² = 9829014827718613122, which 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 (2216868839) 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 in 23 ways as a sum of consecutive naturals, for example, 23265 + ... + 70533.

Almost surely, 2^2216868831 is an apocalyptic number.

2216868831 is a deficient number, since it is larger than the sum of its proper divisors (1121149489).

2216868831 is an equidigital number, since it uses as much as digits as its factorization.

2216868831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47477 (or 47465 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 2216868831 is about 47083.6365524160. The cubic root of 2216868831 is about 1303.9071468928.

The spelling of 2216868831 in words is "two billion, two hundred sixteen million, eight hundred sixty-eight thousand, eight hundred thirty-one".