133071671 has 4 divisors (see below), whose sum is σ = 133653000. Its totient is φ = 132490344.

The previous prime is 133071667. The next prime is 133071689. The reversal of 133071671 is 176170331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133071671 - 2² = 133071667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133071661) 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 in 3 ways as a sum of consecutive naturals, for example, 290321 + ... + 290778.

It is an arithmetic number, because the mean of its divisors is an integer number (33413250).

Almost surely, 2^133071671 is an apocalyptic number.

133071671 is a deficient number, since it is larger than the sum of its proper divisors (581329).

133071671 is an equidigital number, since it uses as much as digits as its factorization.

133071671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581328.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 133071671 is about 11535.6695080953. The cubic root of 133071671 is about 510.5385455541.

The spelling of 133071671 in words is "one hundred thirty-three million, seventy-one thousand, six hundred seventy-one".