320123330 has 16 divisors (see below), whose sum is σ = 576790200. Its totient is φ = 127923072.

The previous prime is 320123317. The next prime is 320123359. The reversal of 320123330 is 33321023.

It can be written as a sum of positive squares in 4 ways, for example, as 218537089 + 101586241 = 14783^2 + 10079^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320123299 and 320123308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4769 + ... + 25748.

Almost surely, 2^320123330 is an apocalyptic number.

320123330 is a deficient number, since it is larger than the sum of its proper divisors (256666870).

320123330 is a wasteful number, since it uses less digits than its factorization.

320123330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31573.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 320123330 is about 17891.9906662171. The cubic root of 320123330 is about 684.0782387733.

Adding to 320123330 its reverse (33321023), we get a palindrome (353444353).

The spelling of 320123330 in words is "three hundred twenty million, one hundred twenty-three thousand, three hundred thirty".