320131444447 has 2 divisors, whose sum is σ = 320131444448. Its totient is φ = 320131444446.

The previous prime is 320131444427. The next prime is 320131444471. The reversal of 320131444447 is 744444131023.

It is a weak prime.

It is an emirp because it is prime and its reverse (744444131023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320131444447 - 2¹¹ = 320131442399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320131444417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160065722223 + 160065722224.

It is an arithmetic number, because the mean of its divisors is an integer number (160065722224).

Almost surely, 2^320131444447 is an apocalyptic number.

320131444447 is a deficient number, since it is larger than the sum of its proper divisors (1).

320131444447 is an equidigital number, since it uses as much as digits as its factorization.

320131444447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 37.

The spelling of 320131444447 in words is "three hundred twenty billion, one hundred thirty-one million, four hundred forty-four thousand, four hundred forty-seven".