320134321 has 8 divisors (see below), whose sum is σ = 344905064. Its totient is φ = 295384320.

The previous prime is 320134319. The next prime is 320134333. The reversal of 320134321 is 123431023.

It is the 7305-th star number.

It can be written as a sum of positive squares in 4 ways, for example, as 16120225 + 304014096 = 4015^2 + 17436^2 .

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 320134321 - 2¹ = 320134319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320134351) 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, 44731 + ... + 51391.

It is an arithmetic number, because the mean of its divisors is an integer number (43113133).

Almost surely, 2^320134321 is an apocalyptic number.

It is an amenable number.

320134321 is a deficient number, since it is larger than the sum of its proper divisors (24770743).

320134321 is a wasteful number, since it uses less digits than its factorization.

320134321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10371.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 320134321 is about 17892.2978121872. The cubic root of 320134321 is about 684.0860676497.

Adding to 320134321 its reverse (123431023), we get a palindrome (443565344).

The spelling of 320134321 in words is "three hundred twenty million, one hundred thirty-four thousand, three hundred twenty-one".