133232287 has 2 divisors, whose sum is σ = 133232288. Its totient is φ = 133232286.

The previous prime is 133232273. The next prime is 133232303. The reversal of 133232287 is 782232331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133232287 - 2²³ = 124843679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133232257) 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, 66616143 + 66616144.

It is an arithmetic number, because the mean of its divisors is an integer number (66616144).

Almost surely, 2^133232287 is an apocalyptic number.

133232287 is a deficient number, since it is larger than the sum of its proper divisors (1).

133232287 is an equidigital number, since it uses as much as digits as its factorization.

133232287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 133232287 is about 11542.6291199189. The cubic root of 133232287 is about 510.7438677168.

The spelling of 133232287 in words is "one hundred thirty-three million, two hundred thirty-two thousand, two hundred eighty-seven".