320103213065 has 4 divisors (see below), whose sum is σ = 384123855684. Its totient is φ = 256082570448.

The previous prime is 320103213047. The next prime is 320103213071. The reversal of 320103213065 is 560312301023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560312301023 = 17 ⋅32959547119.

It can be written as a sum of positive squares in 2 ways, for example, as 145844554816 + 174258658249 = 381896^2 + 417443^2 .

It is a cyclic number.

It is not a de Polignac number, because 320103213065 - 2¹⁰ = 320103212041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32010321302 + ... + 32010321311.

It is an arithmetic number, because the mean of its divisors is an integer number (96030963921).

Almost surely, 2^320103213065 is an apocalyptic number.

It is an amenable number.

320103213065 is a deficient number, since it is larger than the sum of its proper divisors (64020642619).

320103213065 is an equidigital number, since it uses as much as digits as its factorization.

320103213065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64020642618.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 320103213065 its reverse (560312301023), we get a palindrome (880415514088).

The spelling of 320103213065 in words is "three hundred twenty billion, one hundred three million, two hundred thirteen thousand, sixty-five".