103009 has 4 divisors (see below), whose sum is σ = 103680. Its totient is φ = 102340.

The previous prime is 103007. The next prime is 103043. The reversal of 103009 is 900301.

It is a happy number.

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: 900301 = 83 ⋅10847.

It is a cyclic number.

It is not a de Polignac number, because 103009 - 2¹ = 103007 is a prime.

It is a super-2 number, since 2×103009² = 21221708162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103009.

It is not an unprimeable number, because it can be changed into a prime (103001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24 + ... + 454.

It is an arithmetic number, because the mean of its divisors is an integer number (25920).

2¹⁰³⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

103009 is a deficient number, since it is larger than the sum of its proper divisors (671).

103009 is an equidigital number, since it uses as much as digits as its factorization.

103009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 103009 is about 320.9501518928. The cubic root of 103009 is about 46.8768467421.

The spelling of 103009 in words is "one hundred three thousand, nine".