2231112133 has 4 divisors (see below), whose sum is σ = 2234825068. Its totient is φ = 2227399200.

The previous prime is 2231112131. The next prime is 2231112157. The reversal of 2231112133 is 3312111322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1274632804 + 956479329 = 35702^2 + 30927^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231112133 - 2¹ = 2231112131 is a prime.

It is a super-3 number, since 3×2231112133³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2231112133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231112131) 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, 1855566 + ... + 1856767.

It is an arithmetic number, because the mean of its divisors is an integer number (558706267).

Almost surely, 2^2231112133 is an apocalyptic number.

It is an amenable number.

2231112133 is a deficient number, since it is larger than the sum of its proper divisors (3712935).

2231112133 is an equidigital number, since it uses as much as digits as its factorization.

2231112133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3712934.

The product of its digits is 216, while the sum is 19.

The square root of 2231112133 is about 47234.6497076034. The cubic root of 2231112133 is about 1306.6937062799.

Adding to 2231112133 its reverse (3312111322), we get a palindrome (5543223455).

The spelling of 2231112133 in words is "two billion, two hundred thirty-one million, one hundred twelve thousand, one hundred thirty-three".