288325321 has 16 divisors (see below), whose sum is σ = 311943744. Its totient is φ = 265503744.

The previous prime is 288325313. The next prime is 288325339. The reversal of 288325321 is 123523882.

It is a cyclic number.

It is not a de Polignac number, because 288325321 - 2³ = 288325313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (288325351) 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 15 ways as a sum of consecutive naturals, for example, 184881 + ... + 186433.

It is an arithmetic number, because the mean of its divisors is an integer number (19496484).

Almost surely, 2^288325321 is an apocalyptic number.

It is an amenable number.

288325321 is a deficient number, since it is larger than the sum of its proper divisors (23618423).

288325321 is a wasteful number, since it uses less digits than its factorization.

288325321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800.

The product of its digits is 23040, while the sum is 34.

The square root of 288325321 is about 16980.1449051532. The cubic root of 288325321 is about 660.6340104423.

The spelling of 288325321 in words is "two hundred eighty-eight million, three hundred twenty-five thousand, three hundred twenty-one".