320681312 has 24 divisors (see below), whose sum is σ = 721533456. Its totient is φ = 137434752.

The previous prime is 320681299. The next prime is 320681327. The reversal of 320681312 is 213186023.

320681312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 715583 + ... + 716030.

It is an arithmetic number, because the mean of its divisors is an integer number (30063894).

Almost surely, 2^320681312 is an apocalyptic number.

320681312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320681312 is an abundant number, since it is smaller than the sum of its proper divisors (400852144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320681312 is a wasteful number, since it uses less digits than its factorization.

320681312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431630 (or 1431622 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 320681312 is about 17907.5769438526. The cubic root of 320681312 is about 684.4754625411.

The spelling of 320681312 in words is "three hundred twenty million, six hundred eighty-one thousand, three hundred twelve".