3120305 has 16 divisors (see below), whose sum is σ = 3967488. Its totient is φ = 2352000.

The previous prime is 3120287. The next prime is 3120311. The reversal of 3120305 is 5030213.

It is not a de Polignac number, because 3120305 - 2¹⁶ = 3054769 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3120305.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6110 + ... + 6600.

It is an arithmetic number, because the mean of its divisors is an integer number (247968).

Almost surely, 2^3120305 is an apocalyptic number.

It is an amenable number.

3120305 is a deficient number, since it is larger than the sum of its proper divisors (847183).

3120305 is a wasteful number, since it uses less digits than its factorization.

3120305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 3120305 is about 1766.4385072795. The cubic root of 3120305 is about 146.1276328086.

Adding to 3120305 its reverse (5030213), we get a palindrome (8150518).

The spelling of 3120305 in words is "three million, one hundred twenty thousand, three hundred five".