320021032003 has 4 divisors (see below), whose sum is σ = 322853076648. Its totient is φ = 317188987360.

The previous prime is 320021031991. The next prime is 320021032021. The reversal of 320021032003 is 300230120023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300230120023 = 31387 ⋅9565429.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320021032003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320021032073) 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, 1416022153 + ... + 1416022378.

It is an arithmetic number, because the mean of its divisors is an integer number (80713269162).

Almost surely, 2^320021032003 is an apocalyptic number.

320021032003 is a deficient number, since it is larger than the sum of its proper divisors (2832044645).

320021032003 is a wasteful number, since it uses less digits than its factorization.

320021032003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832044644.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 320021032003 its reverse (300230120023), we get a palindrome (620251152026).

The spelling of 320021032003 in words is "three hundred twenty billion, twenty-one million, thirty-two thousand, three".