133023321 has 12 divisors (see below), whose sum is σ = 192245040. Its totient is φ = 88635960.

The previous prime is 133023277. The next prime is 133023323. The reversal of 133023321 is 123320331.

133023321 is a `hidden beast` number, since 1 + 330 + 2 + 332 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-133023321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133023294 and 133023303.

It is not an unprimeable number, because it can be changed into a prime (133023323) 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 11 ways as a sum of consecutive naturals, for example, 30070 + ... + 34208.

It is an arithmetic number, because the mean of its divisors is an integer number (16020420).

Almost surely, 2^133023321 is an apocalyptic number.

It is an amenable number.

133023321 is a deficient number, since it is larger than the sum of its proper divisors (59221719).

133023321 is a wasteful number, since it uses less digits than its factorization.

133023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7716 (or 7713 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133023321 is about 11533.5736439319. The cubic root of 133023321 is about 510.4767053726.

Adding to 133023321 its reverse (123320331), we get a palindrome (256343652).

The spelling of 133023321 in words is "one hundred thirty-three million, twenty-three thousand, three hundred twenty-one".