1320003103 has 4 divisors (see below), whose sum is σ = 1338594768. Its totient is φ = 1301411440.

The previous prime is 1320003089. The next prime is 1320003127. The reversal of 1320003103 is 3013000231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3013000231 = 307 ⋅9814333.

It is a cyclic number.

It is not a de Polignac number, because 1320003103 - 2⁵ = 1320003071 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 (1320003173) 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, 9295726 + ... + 9295867.

It is an arithmetic number, because the mean of its divisors is an integer number (334648692).

Almost surely, 2^1320003103 is an apocalyptic number.

1320003103 is a deficient number, since it is larger than the sum of its proper divisors (18591665).

1320003103 is an equidigital number, since it uses as much as digits as its factorization.

1320003103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18591664.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 1320003103 is about 36331.8469527768. The cubic root of 1320003103 is about 1096.9621700492.

Adding to 1320003103 its reverse (3013000231), we get a palindrome (4333003334).

The spelling of 1320003103 in words is "one billion, three hundred twenty million, three thousand, one hundred three".