133914217 has 2 divisors, whose sum is σ = 133914218. Its totient is φ = 133914216.

The previous prime is 133914191. The next prime is 133914229. The reversal of 133914217 is 712419331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118461456 + 15452761 = 10884^2 + 3931^2 .

It is a cyclic number.

It is not a de Polignac number, because 133914217 - 2⁷ = 133914089 is a prime.

It is not a weakly prime, because it can be changed into another prime (133912217) 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 as a sum of consecutive naturals, namely, 66957108 + 66957109.

It is an arithmetic number, because the mean of its divisors is an integer number (66957109).

Almost surely, 2^133914217 is an apocalyptic number.

It is an amenable number.

133914217 is a deficient number, since it is larger than the sum of its proper divisors (1).

133914217 is an equidigital number, since it uses as much as digits as its factorization.

133914217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 133914217 is about 11572.1310483420. The cubic root of 133914217 is about 511.6137745315.

The spelling of 133914217 in words is "one hundred thirty-three million, nine hundred fourteen thousand, two hundred seventeen".