133805071 has 2 divisors, whose sum is σ = 133805072. Its totient is φ = 133805070.

The previous prime is 133805069. The next prime is 133805081. The reversal of 133805071 is 170508331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133805071 - 2¹ = 133805069 is a prime.

Together with 133805069, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133805051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66902535 + 66902536.

It is an arithmetic number, because the mean of its divisors is an integer number (66902536).

Almost surely, 2^133805071 is an apocalyptic number.

133805071 is a deficient number, since it is larger than the sum of its proper divisors (1).

133805071 is an equidigital number, since it uses as much as digits as its factorization.

133805071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 133805071 is about 11567.4141881408. The cubic root of 133805071 is about 511.4747408127.

The spelling of 133805071 in words is "one hundred thirty-three million, eight hundred five thousand, seventy-one".