128321333 has 8 divisors (see below), whose sum is σ = 147638400. Its totient is φ = 109250640.

The previous prime is 128321299. The next prime is 128321363. The reversal of 128321333 is 333123821.

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 128321333 - 2²⁶ = 61212469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128321363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60473 + ... + 62558.

It is an arithmetic number, because the mean of its divisors is an integer number (18454800).

Almost surely, 2^128321333 is an apocalyptic number.

It is an amenable number.

128321333 is a deficient number, since it is larger than the sum of its proper divisors (19317067).

128321333 is a wasteful number, since it uses less digits than its factorization.

128321333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123187.

The product of its digits is 2592, while the sum is 26.

The square root of 128321333 is about 11327.9006439852. The cubic root of 128321333 is about 504.3897906856.

The spelling of 128321333 in words is "one hundred twenty-eight million, three hundred twenty-one thousand, three hundred thirty-three".