2133312991 has 2 divisors, whose sum is σ = 2133312992. Its totient is φ = 2133312990.

The previous prime is 2133312971. The next prime is 2133313069. The reversal of 2133312991 is 1992133312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2133312991 - 2¹³ = 2133304799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2133312901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066656495 + 1066656496.

It is an arithmetic number, because the mean of its divisors is an integer number (1066656496).

Almost surely, 2^2133312991 is an apocalyptic number.

2133312991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133312991 is an equidigital number, since it uses as much as digits as its factorization.

2133312991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 34.

The square root of 2133312991 is about 46187.8013224271. The cubic root of 2133312991 is about 1287.3150877306.

The spelling of 2133312991 in words is "two billion, one hundred thirty-three million, three hundred twelve thousand, nine hundred ninety-one".