133033331 has 2 divisors, whose sum is σ = 133033332. Its totient is φ = 133033330.

The previous prime is 133033319. The next prime is 133033361. The reversal of 133033331 is 133330331.

It is a weak prime.

It is an emirp because it is prime and its reverse (133330331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133033331 - 2¹⁰ = 133032307 is a prime.

It is a super-2 number, since 2×133033331² = 35395734313911122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133033361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66516665 + 66516666.

It is an arithmetic number, because the mean of its divisors is an integer number (66516666).

Almost surely, 2^133033331 is an apocalyptic number.

133033331 is a deficient number, since it is larger than the sum of its proper divisors (1).

133033331 is an equidigital number, since it uses as much as digits as its factorization.

133033331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 20.

The square root of 133033331 is about 11534.0075862642. The cubic root of 133033331 is about 510.4895095025.

Adding to 133033331 its reverse (133330331), we get a palindrome (266363662).

The spelling of 133033331 in words is "one hundred thirty-three million, thirty-three thousand, three hundred thirty-one".