133287871 has 16 divisors (see below), whose sum is σ = 143679744. Its totient is φ = 123202944.

The previous prime is 133287859. The next prime is 133287887. The reversal of 133287871 is 178782331.

It is not a de Polignac number, because 133287871 - 2⁵ = 133287839 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 (133287811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285180 + ... + 285646.

It is an arithmetic number, because the mean of its divisors is an integer number (8979984).

Almost surely, 2^133287871 is an apocalyptic number.

133287871 is a deficient number, since it is larger than the sum of its proper divisors (10391873).

133287871 is a wasteful number, since it uses less digits than its factorization.

133287871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750.

The product of its digits is 56448, while the sum is 40.

The square root of 133287871 is about 11545.0366391796. The cubic root of 133287871 is about 510.8148846371.

The spelling of 133287871 in words is "one hundred thirty-three million, two hundred eighty-seven thousand, eight hundred seventy-one".