133017321 has 8 divisors (see below), whose sum is σ = 177917184. Its totient is φ = 88397840.

The previous prime is 133017263. The next prime is 133017341. The reversal of 133017321 is 123710331.

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

It is a cyclic number.

It is not a de Polignac number, because 133017321 - 2¹⁴ = 133000937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133017341) 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 in 7 ways as a sum of consecutive naturals, for example, 68985 + ... + 70886.

It is an arithmetic number, because the mean of its divisors is an integer number (22239648).

Almost surely, 2^133017321 is an apocalyptic number.

It is an amenable number.

133017321 is a deficient number, since it is larger than the sum of its proper divisors (44899863).

133017321 is a wasteful number, since it uses less digits than its factorization.

133017321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140191.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 133017321 is about 11533.3135308115. The cubic root of 133017321 is about 510.4690302615.

Adding to 133017321 its reverse (123710331), we get a palindrome (256727652).

The spelling of 133017321 in words is "one hundred thirty-three million, seventeen thousand, three hundred twenty-one".