133717 has 2 divisors, whose sum is σ = 133718. Its totient is φ = 133716.

The previous prime is 133711. The next prime is 133723. The reversal of 133717 is 717331.

It is a balanced prime because it is at equal distance from previous prime (133711) and next prime (133723).

It can be written as a sum of positive squares in only one way, i.e., 78961 + 54756 = 281^2 + 234^2 .

It is an emirp because it is prime and its reverse (717331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133717 - 2³ = 133709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66858 + 66859.

It is an arithmetic number, because the mean of its divisors is an integer number (66859).

2¹³³⁷¹⁷ is an apocalyptic number.

It is an amenable number.

133717 is a deficient number, since it is larger than the sum of its proper divisors (1).

133717 is an equidigital number, since it uses as much as digits as its factorization.

133717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 441, while the sum is 22.

The square root of 133717 is about 365.6733515038. The cubic root of 133717 is about 51.1362497985.

The spelling of 133717 in words is "one hundred thirty-three thousand, seven hundred seventeen".