133305511 has 2 divisors, whose sum is σ = 133305512. Its totient is φ = 133305510.

The previous prime is 133305509. The next prime is 133305533. The reversal of 133305511 is 115503331.

It is an a-pointer prime, because the next prime (133305533) can be obtained adding 133305511 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133305511 - 2¹ = 133305509 is a prime.

It is a super-2 number, since 2×133305511² = 35540718525942242, which contains 22 as substring.

Together with 133305509, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133305581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66652755 + 66652756.

It is an arithmetic number, because the mean of its divisors is an integer number (66652756).

Almost surely, 2^133305511 is an apocalyptic number.

133305511 is a deficient number, since it is larger than the sum of its proper divisors (1).

133305511 is an equidigital number, since it uses as much as digits as its factorization.

133305511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 675, while the sum is 22.

The square root of 133305511 is about 11545.8005785654. The cubic root of 133305511 is about 510.8374182630.

Adding to 133305511 its reverse (115503331), we get a palindrome (248808842).

The spelling of 133305511 in words is "one hundred thirty-three million, three hundred five thousand, five hundred eleven".