133971193 has 2 divisors, whose sum is σ = 133971194. Its totient is φ = 133971192.

The previous prime is 133971179. The next prime is 133971217. The reversal of 133971193 is 391179331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133934329 + 36864 = 11573^2 + 192^2 .

It is a cyclic number.

It is not a de Polignac number, because 133971193 - 2⁵ = 133971161 is a prime.

It is not a weakly prime, because it can be changed into another prime (133974193) 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, 66985596 + 66985597.

It is an arithmetic number, because the mean of its divisors is an integer number (66985597).

Almost surely, 2^133971193 is an apocalyptic number.

It is an amenable number.

133971193 is a deficient number, since it is larger than the sum of its proper divisors (1).

133971193 is an equidigital number, since it uses as much as digits as its factorization.

133971193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15309, while the sum is 37.

The square root of 133971193 is about 11574.5925630235. The cubic root of 133971193 is about 511.6863224007.

The spelling of 133971193 in words is "one hundred thirty-three million, nine hundred seventy-one thousand, one hundred ninety-three".