320020912 has 10 divisors (see below), whose sum is σ = 620040548. Its totient is φ = 160010448.

The previous prime is 320020907. The next prime is 320020973. The reversal of 320020912 is 219020023.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 320020912.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000638 + ... + 10000669.

Almost surely, 2^320020912 is an apocalyptic number.

It is an amenable number.

320020912 is a deficient number, since it is larger than the sum of its proper divisors (300019636).

320020912 is a wasteful number, since it uses less digits than its factorization.

320020912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20001315 (or 20001309 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 320020912 is about 17889.1283186185. The cubic root of 320020912 is about 684.0052779365.

Adding to 320020912 its reverse (219020023), we get a palindrome (539040935).

The spelling of 320020912 in words is "three hundred twenty million, twenty thousand, nine hundred twelve".