133870117 has 2 divisors, whose sum is σ = 133870118. Its totient is φ = 133870116.

The previous prime is 133870111. The next prime is 133870129. The reversal of 133870117 is 711078331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126202756 + 7667361 = 11234^2 + 2769^2 .

It is an emirp because it is prime and its reverse (711078331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133870117 - 2²³ = 125481509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133870111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66935058 + 66935059.

It is an arithmetic number, because the mean of its divisors is an integer number (66935059).

Almost surely, 2^133870117 is an apocalyptic number.

It is an amenable number.

133870117 is a deficient number, since it is larger than the sum of its proper divisors (1).

133870117 is an equidigital number, since it uses as much as digits as its factorization.

133870117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 133870117 is about 11570.2254515632. The cubic root of 133870117 is about 511.5576076183.

The spelling of 133870117 in words is "one hundred thirty-three million, eight hundred seventy thousand, one hundred seventeen".