320044043813 has 8 divisors (see below), whose sum is σ = 344678874456. Its totient is φ = 295411507200.

The previous prime is 320044043801. The next prime is 320044043831. The reversal of 320044043813 is 318340440023.

It can be written as a sum of positive squares in 4 ways, for example, as 13091478724 + 306952565089 = 114418^2 + 554033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320044043813 - 2⁶ = 320044043749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320044043813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320044045813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278108 + ... + 847013.

It is an arithmetic number, because the mean of its divisors is an integer number (43084859307).

Almost surely, 2^320044043813 is an apocalyptic number.

It is an amenable number.

320044043813 is a deficient number, since it is larger than the sum of its proper divisors (24634830643).

320044043813 is a wasteful number, since it uses less digits than its factorization.

320044043813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147015.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 320044043813 its reverse (318340440023), we get a palindrome (638384483836).

The spelling of 320044043813 in words is "three hundred twenty billion, forty-four million, forty-three thousand, eight hundred thirteen".