133411081 has 2 divisors, whose sum is σ = 133411082. Its totient is φ = 133411080.

The previous prime is 133411079. The next prime is 133411139. The reversal of 133411081 is 180114331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128051856 + 5359225 = 11316^2 + 2315^2 .

It is a cyclic number.

It is not a de Polignac number, because 133411081 - 2¹ = 133411079 is a prime.

It is a super-3 number, since 3×133411081³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 133411079, it forms a pair of twin primes.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (133421081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66705540 + 66705541.

It is an arithmetic number, because the mean of its divisors is an integer number (66705541).

Almost surely, 2^133411081 is an apocalyptic number.

It is an amenable number.

133411081 is a deficient number, since it is larger than the sum of its proper divisors (1).

133411081 is an equidigital number, since it uses as much as digits as its factorization.

133411081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 133411081 is about 11550.3714658880. The cubic root of 133411081 is about 510.9722335853.

The spelling of 133411081 in words is "one hundred thirty-three million, four hundred eleven thousand, eighty-one".