1300001003 has 4 divisors (see below), whose sum is σ = 1485715440. Its totient is φ = 1114286568.

The previous prime is 1300000991. The next prime is 1300001039. The reversal of 1300001003 is 3001000031.

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

It is a cyclic number.

It is not a de Polignac number, because 1300001003 - 2⁴ = 1300000987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1300001903) 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, 92857208 + ... + 92857221.

It is an arithmetic number, because the mean of its divisors is an integer number (371428860).

Almost surely, 2^1300001003 is an apocalyptic number.

1300001003 is a deficient number, since it is larger than the sum of its proper divisors (185714437).

1300001003 is an equidigital number, since it uses as much as digits as its factorization.

1300001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185714436.

The product of its (nonzero) digits is 9, while the sum is 8.

The square root of 1300001003 is about 36055.5266637446. The cubic root of 1300001003 is about 1091.3931637449.

Adding to 1300001003 its reverse (3001000031), we get a palindrome (4301001034).

The spelling of 1300001003 in words is "one billion, three hundred million, one thousand, three".