133688117 has 2 divisors, whose sum is σ = 133688118. Its totient is φ = 133688116.

The previous prime is 133688111. The next prime is 133688143. The reversal of 133688117 is 711886331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86229796 + 47458321 = 9286^2 + 6889^2 .

It is a cyclic number.

It is not a de Polignac number, because 133688117 - 2⁸ = 133687861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133688111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66844058 + 66844059.

It is an arithmetic number, because the mean of its divisors is an integer number (66844059).

Almost surely, 2^133688117 is an apocalyptic number.

It is an amenable number.

133688117 is a deficient number, since it is larger than the sum of its proper divisors (1).

133688117 is an equidigital number, since it uses as much as digits as its factorization.

133688117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 133688117 is about 11562.3577612873. The cubic root of 133688117 is about 511.3256770705.

The spelling of 133688117 in words is "one hundred thirty-three million, six hundred eighty-eight thousand, one hundred seventeen".