320323031312 has 10 divisors (see below), whose sum is σ = 620625873198. Its totient is φ = 160161515648.

The previous prime is 320323031297. The next prime is 320323031317. The reversal of 320323031312 is 213130323023.

It can be written as a sum of positive squares in only one way, i.e., 223101296896 + 97221734416 = 472336^2 + 311804^2 .

It is not an unprimeable number, because it can be changed into a prime (320323031317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010094713 + ... + 10010094744.

Almost surely, 2^320323031312 is an apocalyptic number.

It is an amenable number.

320323031312 is a deficient number, since it is larger than the sum of its proper divisors (300302841886).

320323031312 is a wasteful number, since it uses less digits than its factorization.

320323031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20020189465 (or 20020189459 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 320323031312 its reverse (213130323023), we get a palindrome (533453354335).

The spelling of 320323031312 in words is "three hundred twenty billion, three hundred twenty-three million, thirty-one thousand, three hundred twelve".