1003103513 has 4 divisors (see below), whose sum is σ = 1062109620. Its totient is φ = 944097408.

The previous prime is 1003103501. The next prime is 1003103539. The reversal of 1003103513 is 3153013001.

1003103513 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.

It can be written as a sum of positive squares in 2 ways, for example, as 655206409 + 347897104 = 25597^2 + 18652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003103513 - 2¹⁶ = 1003037977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 59006089 = 1003103513 / (1 + 0 + 0 + 3 + 1 + 0 + 3 + 5 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003103491 and 1003103500.

It is not an unprimeable number, because it can be changed into a prime (1003103573) 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, 29503028 + ... + 29503061.

It is an arithmetic number, because the mean of its divisors is an integer number (265527405).

Almost surely, 2^1003103513 is an apocalyptic number.

It is an amenable number.

1003103513 is a deficient number, since it is larger than the sum of its proper divisors (59006107).

1003103513 is an equidigital number, since it uses as much as digits as its factorization.

1003103513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59006106.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 1003103513 is about 31671.8094367846. The cubic root of 1003103513 is about 1001.0334359755.

Adding to 1003103513 its reverse (3153013001), we get a palindrome (4156116514).

It can be divided in two parts, 100310 and 3513, that added together give a cube (103823 = 47³).

The spelling of 1003103513 in words is "one billion, three million, one hundred three thousand, five hundred thirteen".