3103509 has 4 divisors (see below), whose sum is σ = 4138016. Its totient is φ = 2069004.

The previous prime is 3103501. The next prime is 3103531. The reversal of 3103509 is 9053013.

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 an emirpimes, since its reverse is a distinct semiprime: 9053013 = 3 ⋅3017671.

It is not a de Polignac number, because 3103509 - 2³ = 3103501 is a prime.

It is a super-2 number, since 2×3103509² = 19263536226162, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3103501) 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, 517249 + ... + 517254.

It is an arithmetic number, because the mean of its divisors is an integer number (1034504).

Almost surely, 2^3103509 is an apocalyptic number.

It is an amenable number.

3103509 is a deficient number, since it is larger than the sum of its proper divisors (1034507).

3103509 is a wasteful number, since it uses less digits than its factorization.

3103509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034506.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 3103509 is about 1761.6778933732. The cubic root of 3103509 is about 145.8649686653.

The spelling of 3103509 in words is "three million, one hundred three thousand, five hundred nine".