1003103231321 has 8 divisors (see below), whose sum is σ = 1025928441984. Its totient is φ = 980339795280.

The previous prime is 1003103231183. The next prime is 1003103231329. The reversal of 1003103231321 is 1231323013001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1003103231321 - 2²⁶ = 1003036122457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003103231293 and 1003103231302.

It is not an unprimeable number, because it can be changed into a prime (1003103231329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15410810 + ... + 15475763.

It is an arithmetic number, because the mean of its divisors is an integer number (128241055248).

Almost surely, 2^{1003103231321} is an apocalyptic number.

It is an amenable number.

1003103231321 is a deficient number, since it is larger than the sum of its proper divisors (22825210663).

1003103231321 is an equidigital number, since it uses as much as digits as its factorization.

1003103231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30887311.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1003103231321 its reverse (1231323013001), we get a palindrome (2234426244322).

The spelling of 1003103231321 in words is "one trillion, three billion, one hundred three million, two hundred thirty-one thousand, three hundred twenty-one".