3120385 has 16 divisors (see below), whose sum is σ = 3878784. Its totient is φ = 2408832.

The previous prime is 3120373. The next prime is 3120407. The reversal of 3120385 is 5830213.

3120385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3120385 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 30244 + ... + 30346.

It is an arithmetic number, because the mean of its divisors is an integer number (242424).

Almost surely, 2^3120385 is an apocalyptic number.

It is an amenable number.

3120385 is a deficient number, since it is larger than the sum of its proper divisors (758399).

3120385 is a wasteful number, since it uses less digits than its factorization.

3120385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 3120385 is about 1766.4611515683. The cubic root of 3120385 is about 146.1288816299.

Adding to 3120385 its reverse (5830213), we get a palindrome (8950598).

The spelling of 3120385 in words is "three million, one hundred twenty thousand, three hundred eighty-five".