3120309 has 16 divisors (see below), whose sum is σ = 4657600. Its totient is φ = 2064528.

The previous prime is 3120287. The next prime is 3120311. The reversal of 3120309 is 9030213.

It is not a de Polignac number, because 3120309 - 2⁵ = 3120277 is a prime.

It is a Duffinian number.

3120309 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3120291 and 3120300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4047 + ... + 4755.

It is an arithmetic number, because the mean of its divisors is an integer number (291100).

Almost surely, 2^3120309 is an apocalyptic number.

It is an amenable number.

3120309 is a deficient number, since it is larger than the sum of its proper divisors (1537291).

3120309 is a wasteful number, since it uses less digits than its factorization.

3120309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 3120309 is about 1766.4396395009. The cubic root of 3120309 is about 146.1276952501.

The spelling of 3120309 in words is "three million, one hundred twenty thousand, three hundred nine".