1003000013 has 4 divisors (see below), whose sum is σ = 1003080768. Its totient is φ = 1002919260.

The previous prime is 1003000001. The next prime is 1003000021. The reversal of 1003000013 is 3100003001.

1003000013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3100003001 = 22189 ⋅139709.

It is a cyclic number.

It is not a de Polignac number, because 1003000013 - 2¹⁶ = 1002934477 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 (1003000043) 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, 17381 + ... + 48042.

It is an arithmetic number, because the mean of its divisors is an integer number (250770192).

Almost surely, 2^1003000013 is an apocalyptic number.

It is an amenable number.

1003000013 is a deficient number, since it is larger than the sum of its proper divisors (80755).

1003000013 is an equidigital number, since it uses as much as digits as its factorization.

1003000013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80754.

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

The square root of 1003000013 is about 31670.1754494666. The cubic root of 1003000013 is about 1000.9990059880. Note that the first 3 decimals are identical.

Adding to 1003000013 its reverse (3100003001), we get a palindrome (4103003014).

The spelling of 1003000013 in words is "one billion, three million, thirteen", and thus it is an aban number and an uban number.