320744171117203 has 4 divisors (see below), whose sum is σ = 320749962764848. Its totient is φ = 320738379469560.

The previous prime is 320744171117177. The next prime is 320744171117219. The reversal of 320744171117203 is 302711171447023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320744171117203 is a prime.

It is a super-2 number, since 2×320744171117203² (a number of 30 digits) contains 22 as substring.

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 320744171117203.

It is not an unprimeable number, because it can be changed into a prime (320744571117203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2895740751 + ... + 2895851512.

It is an arithmetic number, because the mean of its divisors is an integer number (80187490691212).

Almost surely, 2^{320744171117203} is an apocalyptic number.

320744171117203 is a deficient number, since it is larger than the sum of its proper divisors (5791647645).

320744171117203 is an equidigital number, since it uses as much as digits as its factorization.

320744171117203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791647644.

The product of its (nonzero) digits is 197568, while the sum is 43.

The spelling of 320744171117203 in words is "three hundred twenty trillion, seven hundred forty-four billion, one hundred seventy-one million, one hundred seventeen thousand, two hundred three".