133317247 has 8 divisors (see below), whose sum is σ = 161325216. Its totient is φ = 107549952.

The previous prime is 133317229. The next prime is 133317257. The reversal of 133317247 is 742713331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133317247 is a prime.

It is a Duffinian number.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133317257) 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 7 ways as a sum of consecutive naturals, for example, 560038 + ... + 560275.

It is an arithmetic number, because the mean of its divisors is an integer number (20165652).

Almost surely, 2^133317247 is an apocalyptic number.

133317247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

133317247 is a deficient number, since it is larger than the sum of its proper divisors (28007969).

133317247 is a wasteful number, since it uses less digits than its factorization.

133317247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120337.

The product of its digits is 10584, while the sum is 31.

The square root of 133317247 is about 11546.3088041157. The cubic root of 133317247 is about 510.8524089211.

The spelling of 133317247 in words is "one hundred thirty-three million, three hundred seventeen thousand, two hundred forty-seven".