2116631 has 8 divisors (see below), whose sum is σ = 2323344. Its totient is φ = 1912320.

The previous prime is 2116627. The next prime is 2116633. The reversal of 2116631 is 1366112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2116631 - 2² = 2116627 is a prime.

It is a super-2 number, since 2×2116631² = 8960253580322, 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 (2116633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1625 + ... + 2621.

It is an arithmetic number, because the mean of its divisors is an integer number (290418).

2^2116631 is an apocalyptic number.

2116631 is a deficient number, since it is larger than the sum of its proper divisors (206713).

2116631 is a wasteful number, since it uses less digits than its factorization.

2116631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201.

The product of its digits is 216, while the sum is 20.

The square root of 2116631 is about 1454.8645985108. The cubic root of 2116631 is about 128.3950805723.

The spelling of 2116631 in words is "two million, one hundred sixteen thousand, six hundred thirty-one".