1003321201320 has 96 divisors (see below), whose sum is σ = 3269176864200. Its totient is φ = 266864487936.

The previous prime is 1003321201319. The next prime is 1003321201327. The reversal of 1003321201320 is 231021233001.

1003321201320 is a `hidden beast` number, since 1 + 0 + 0 + 3 + 321 + 20 + 1 + 320 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 835370408196 + 167950793124 = 913986^2 + 409818^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1003321201293 and 1003321201302.

It is not an unprimeable number, because it can be changed into a prime (1003321201327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3442227 + ... + 3722306.

Almost surely, 2^{1003321201320} is an apocalyptic number.

1003321201320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003321201320 is an abundant number, since it is smaller than the sum of its proper divisors (2265855662880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1003321201320 is a wasteful number, since it uses less digits than its factorization.

1003321201320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164939 (or 7164932 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1003321201320 its reverse (231021233001), we get a palindrome (1234342434321).

The spelling of 1003321201320 in words is "one trillion, three billion, three hundred twenty-one million, two hundred one thousand, three hundred twenty".