2133011381 has 2 divisors, whose sum is σ = 2133011382. Its totient is φ = 2133011380.

The previous prime is 2133011371. The next prime is 2133011399. The reversal of 2133011381 is 1831103312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1162128100 + 970883281 = 34090^2 + 31159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2133011381 is a prime.

It is a super-2 number, since 2×2133011381² = 9099475102951054322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2133011311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066505690 + 1066505691.

It is an arithmetic number, because the mean of its divisors is an integer number (1066505691).

Almost surely, 2^2133011381 is an apocalyptic number.

It is an amenable number.

2133011381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133011381 is an equidigital number, since it uses as much as digits as its factorization.

2133011381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2133011381 is about 46184.5361674230. The cubic root of 2133011381 is about 1287.2544175578.

Adding to 2133011381 its reverse (1831103312), we get a palindrome (3964114693).

The spelling of 2133011381 in words is "two billion, one hundred thirty-three million, eleven thousand, three hundred eighty-one".