3105005 has 8 divisors (see below), whose sum is σ = 3796632. Its totient is φ = 2436928.

The previous prime is 3104963. The next prime is 3105007. The reversal of 3105005 is 5005013.

It can be written as a sum of positive squares in 4 ways, for example, as 17956 + 3087049 = 134^2 + 1757^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3105005 - 2⁸ = 3104749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3105007) 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 7 ways as a sum of consecutive naturals, for example, 5594 + ... + 6123.

It is an arithmetic number, because the mean of its divisors is an integer number (474579).

Almost surely, 2^3105005 is an apocalyptic number.

It is an amenable number.

3105005 is a deficient number, since it is larger than the sum of its proper divisors (691627).

3105005 is a wasteful number, since it uses less digits than its factorization.

3105005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11775.

The product of its (nonzero) digits is 75, while the sum is 14.

The square root of 3105005 is about 1762.1024374309. The cubic root of 3105005 is about 145.8884022411. Note that the first 3 decimals are identical.

The spelling of 3105005 in words is "three million, one hundred five thousand, five".