133171333 has 2 divisors, whose sum is σ = 133171334. Its totient is φ = 133171332.

The previous prime is 133171309. The next prime is 133171369. The reversal of 133171333 is 333171331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129549924 + 3621409 = 11382^2 + 1903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133171333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133171298 and 133171307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133171733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66585666 + 66585667.

It is an arithmetic number, because the mean of its divisors is an integer number (66585667).

Almost surely, 2^133171333 is an apocalyptic number.

It is an amenable number.

133171333 is a deficient number, since it is larger than the sum of its proper divisors (1).

133171333 is an equidigital number, since it uses as much as digits as its factorization.

133171333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1701, while the sum is 25.

The square root of 133171333 is about 11539.9884315367. The cubic root of 133171333 is about 510.6659671037.

The spelling of 133171333 in words is "one hundred thirty-three million, one hundred seventy-one thousand, three hundred thirty-three".