2117118231 has 24 divisors (see below), whose sum is σ = 3119996880. Its totient is φ = 1382898816.

The previous prime is 2117118229. The next prime is 2117118253. The reversal of 2117118231 is 1328117112.

2117118231 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2117118231 - 2¹ = 2117118229 is a prime.

It is a super-2 number, since 2×2117118231² = 8964379208065138722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2117118195 and 2117118204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117118131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 406200 + ... + 411378.

It is an arithmetic number, because the mean of its divisors is an integer number (129999870).

Almost surely, 2^2117118231 is an apocalyptic number.

2117118231 is a deficient number, since it is larger than the sum of its proper divisors (1002878649).

2117118231 is a wasteful number, since it uses less digits than its factorization.

2117118231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6095 (or 6092 counting only the distinct ones).

The product of its digits is 672, while the sum is 27.

The square root of 2117118231 is about 46012.1530793768. The cubic root of 2117118231 is about 1284.0493164597.

The spelling of 2117118231 in words is "two billion, one hundred seventeen million, one hundred eighteen thousand, two hundred thirty-one".