320731547339 has 32 divisors (see below), whose sum is σ = 378176947200. Its totient is φ = 266347952640.

The previous prime is 320731547329. The next prime is 320731547371. The reversal of 320731547339 is 933745137023.

It is not a de Polignac number, because 320731547339 - 2¹² = 320731543243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320731547293 and 320731547302.

It is not an unprimeable number, because it can be changed into a prime (320731547329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11417399 + ... + 11445455.

It is an arithmetic number, because the mean of its divisors is an integer number (11818029600).

Almost surely, 2^320731547339 is an apocalyptic number.

320731547339 is a deficient number, since it is larger than the sum of its proper divisors (57445399861).

320731547339 is a wasteful number, since it uses less digits than its factorization.

320731547339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28523.

The product of its (nonzero) digits is 1428840, while the sum is 47.

The spelling of 320731547339 in words is "three hundred twenty billion, seven hundred thirty-one million, five hundred forty-seven thousand, three hundred thirty-nine".