320320012 has 24 divisors (see below), whose sum is σ = 592628400. Its totient is φ = 151070976.

The previous prime is 320319973. The next prime is 320320037. The reversal of 320320012 is 210023023.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 320319974 and 320320001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8664 + ... + 26752.

It is an arithmetic number, because the mean of its divisors is an integer number (24692850).

Almost surely, 2^320320012 is an apocalyptic number.

It is an amenable number.

320320012 is a deficient number, since it is larger than the sum of its proper divisors (272308388).

320320012 is a wasteful number, since it uses less digits than its factorization.

320320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18345 (or 18343 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320320012 is about 17897.4861922003. The cubic root of 320320012 is about 684.2183080510.

Adding to 320320012 its reverse (210023023), we get a palindrome (530343035).

The spelling of 320320012 in words is "three hundred twenty million, three hundred twenty thousand, twelve".