320383405438 has 16 divisors (see below), whose sum is σ = 486186850800. Its totient is φ = 158328038016.

The previous prime is 320383405399. The next prime is 320383405469. The reversal of 320383405438 is 834504383023.

It is a junction number, because it is equal to n+sod(n) for n = 320383405394 and 320383405403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1636113 + ... + 1821436.

It is an arithmetic number, because the mean of its divisors is an integer number (30386678175).

Almost surely, 2^320383405438 is an apocalyptic number.

320383405438 is a deficient number, since it is larger than the sum of its proper divisors (165803445362).

320383405438 is a wasteful number, since it uses less digits than its factorization.

320383405438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458091.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 320383405438 in words is "three hundred twenty billion, three hundred eighty-three million, four hundred five thousand, four hundred thirty-eight".