1013903 has 4 divisors (see below), whose sum is σ = 1106088. Its totient is φ = 921720.

The previous prime is 1013899. The next prime is 1013921. The reversal of 1013903 is 3093101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3093101 = 11 ⋅281191.

It is a cyclic number.

It is not a de Polignac number, because 1013903 - 2² = 1013899 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 (1013923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46076 + ... + 46097.

It is an arithmetic number, because the mean of its divisors is an integer number (276522).

2^1013903 is an apocalyptic number.

1013903 is a deficient number, since it is larger than the sum of its proper divisors (92185).

1013903 is an equidigital number, since it uses as much as digits as its factorization.

1013903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92184.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1013903 is about 1006.9275048384. The cubic root of 1013903 is about 100.4613020652.

It can be divided in two parts, 101 and 3903, that added together give a palindrome (4004).

The spelling of 1013903 in words is "one million, thirteen thousand, nine hundred three".