133068391 has 8 divisors (see below), whose sum is σ = 137241104. Its totient is φ = 128926080.

The previous prime is 133068373. The next prime is 133068407. The reversal of 133068391 is 193860331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133068391 - 2¹³ = 133060199 is a prime.

It is a super-3 number, since 3×133068391³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133068491) 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 in 7 ways as a sum of consecutive naturals, for example, 1456 + ... + 16378.

It is an arithmetic number, because the mean of its divisors is an integer number (17155138).

Almost surely, 2^133068391 is an apocalyptic number.

133068391 is a deficient number, since it is larger than the sum of its proper divisors (4172713).

133068391 is a wasteful number, since it uses less digits than its factorization.

133068391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15201.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 133068391 is about 11535.5273394847. The cubic root of 133068391 is about 510.5343508717.

The spelling of 133068391 in words is "one hundred thirty-three million, sixty-eight thousand, three hundred ninety-one".