133088287 has 4 divisors (see below), whose sum is σ = 133436160. Its totient is φ = 132740416.

The previous prime is 133088261. The next prime is 133088321. The reversal of 133088287 is 782880331.

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 133088287 - 2¹⁵ = 133055519 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 (133088387) 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, 173362 + ... + 174127.

It is an arithmetic number, because the mean of its divisors is an integer number (33359040).

Almost surely, 2^133088287 is an apocalyptic number.

133088287 is a deficient number, since it is larger than the sum of its proper divisors (347873).

133088287 is an equidigital number, since it uses as much as digits as its factorization.

133088287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347872.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 133088287 is about 11536.3896865527. The cubic root of 133088287 is about 510.5597941423.

The spelling of 133088287 in words is "one hundred thirty-three million, eighty-eight thousand, two hundred eighty-seven".