3109321 has 4 divisors (see below), whose sum is σ = 3120592. Its totient is φ = 3098052.

The previous prime is 3109319. The next prime is 3109333. The reversal of 3109321 is 1239013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3109321 - 2¹ = 3109319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3109391) 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 3 ways as a sum of consecutive naturals, for example, 5211 + ... + 5776.

It is an arithmetic number, because the mean of its divisors is an integer number (780148).

Almost surely, 2^3109321 is an apocalyptic number.

It is an amenable number.

3109321 is a deficient number, since it is larger than the sum of its proper divisors (11271).

3109321 is a wasteful number, since it uses less digits than its factorization.

3109321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11270.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 3109321 is about 1763.3266855577. The cubic root of 3109321 is about 145.9559665795.

The spelling of 3109321 in words is "three million, one hundred nine thousand, three hundred twenty-one".