320103023021 has 4 divisors (see below), whose sum is σ = 320105966844. Its totient is φ = 320100079200.

The previous prime is 320103022969. The next prime is 320103023059. The reversal of 320103023021 is 120320301023.

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

It can be written as a sum of positive squares in 2 ways, for example, as 233835109225 + 86267913796 = 483565^2 + 293714^2 .

It is a cyclic number.

It is not a de Polignac number, because 320103023021 - 2⁶ = 320103022957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320103023921) 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, 1302290 + ... + 1528451.

It is an arithmetic number, because the mean of its divisors is an integer number (80026491711).

Almost surely, 2^320103023021 is an apocalyptic number.

It is an amenable number.

320103023021 is a deficient number, since it is larger than the sum of its proper divisors (2943823).

320103023021 is a wasteful number, since it uses less digits than its factorization.

320103023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943822.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 320103023021 its reverse (120320301023), we get a palindrome (440423324044).

The spelling of 320103023021 in words is "three hundred twenty billion, one hundred three million, twenty-three thousand, twenty-one".