3149305 has 4 divisors (see below), whose sum is σ = 3779172. Its totient is φ = 2519440.

The previous prime is 3149273. The next prime is 3149309. The reversal of 3149305 is 5039413.

3149305 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, and also an emirpimes, since its reverse is a distinct semiprime: 5039413 = 563 ⋅8951.

It can be written as a sum of positive squares in 2 ways, for example, as 1006009 + 2143296 = 1003^2 + 1464^2 .

It is not a de Polignac number, because 3149305 - 2⁵ = 3149273 is a prime.

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 3149305.

It is not an unprimeable number, because it can be changed into a prime (3149309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314926 + ... + 314935.

It is an arithmetic number, because the mean of its divisors is an integer number (944793).

Almost surely, 2^3149305 is an apocalyptic number.

It is an amenable number.

3149305 is a deficient number, since it is larger than the sum of its proper divisors (629867).

3149305 is an equidigital number, since it uses as much as digits as its factorization.

3149305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629866.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 3149305 is about 1774.6281300599. The cubic root of 3149305 is about 146.5789391577.

The spelling of 3149305 in words is "three million, one hundred forty-nine thousand, three hundred five".