2231116117 has 4 divisors (see below), whose sum is σ = 2232500940. Its totient is φ = 2229731296.

The previous prime is 2231116087. The next prime is 2231116123. The reversal of 2231116117 is 7116111322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7116111322 = 2 ⋅3558055661.

It can be written as a sum of positive squares in 2 ways, for example, as 1616522436 + 614593681 = 40206^2 + 24791^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231116117 is a prime.

It is a super-3 number, since 3×2231116117³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231116091 and 2231116100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231116417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689992 + ... + 693217.

It is an arithmetic number, because the mean of its divisors is an integer number (558125235).

Almost surely, 2^2231116117 is an apocalyptic number.

It is an amenable number.

2231116117 is a deficient number, since it is larger than the sum of its proper divisors (1384823).

2231116117 is a wasteful number, since it uses less digits than its factorization.

2231116117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384822.

The product of its digits is 504, while the sum is 25.

The square root of 2231116117 is about 47234.6918800155. The cubic root of 2231116117 is about 1306.6944840482.

Adding to 2231116117 its reverse (7116111322), we get a palindrome (9347227439).

The spelling of 2231116117 in words is "two billion, two hundred thirty-one million, one hundred sixteen thousand, one hundred seventeen".