320315973840 has 120 divisors (see below), whose sum is σ = 1082852204928. Its totient is φ = 84851884800.

The previous prime is 320315973839. The next prime is 320315973851. The reversal of 320315973840 is 48379513023.

320315973840 is a `hidden beast` number, since 3 + 20 + 3 + 1 + 597 + 38 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1364404 + ... + 1581843.

Almost surely, 2^320315973840 is an apocalyptic number.

320315973840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320315973840 is an abundant number, since it is smaller than the sum of its proper divisors (762536231088).

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

320315973840 is a wasteful number, since it uses less digits than its factorization.

320315973840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946417 (or 2946408 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 320315973840 in words is "three hundred twenty billion, three hundred fifteen million, nine hundred seventy-three thousand, eight hundred forty".