2133243291 has 4 divisors (see below), whose sum is σ = 2844324392. Its totient is φ = 1422162192.

The previous prime is 2133243263. The next prime is 2133243311. The reversal of 2133243291 is 1923423312.

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

It is not a de Polignac number, because 2133243291 - 2⁹ = 2133242779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2133283291) 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, 355540546 + ... + 355540551.

It is an arithmetic number, because the mean of its divisors is an integer number (711081098).

Almost surely, 2^2133243291 is an apocalyptic number.

2133243291 is a deficient number, since it is larger than the sum of its proper divisors (711081101).

2133243291 is an equidigital number, since it uses as much as digits as its factorization.

2133243291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711081100.

The product of its digits is 7776, while the sum is 30.

The square root of 2133243291 is about 46187.0467880335. The cubic root of 2133243291 is about 1287.3010677783.

The spelling of 2133243291 in words is "two billion, one hundred thirty-three million, two hundred forty-three thousand, two hundred ninety-one".