3120321 has 8 divisors (see below), whose sum is σ = 4273024. Its totient is φ = 2023920.

The previous prime is 3120319. The next prime is 3120323. The reversal of 3120321 is 1230213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3120319) and next prime (3120323).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3120321 - 2¹ = 3120319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3120297 and 3120306.

It is not an unprimeable number, because it can be changed into a prime (3120323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13945 + ... + 14166.

It is an arithmetic number, because the mean of its divisors is an integer number (534128).

Almost surely, 2^3120321 is an apocalyptic number.

It is an amenable number.

3120321 is a deficient number, since it is larger than the sum of its proper divisors (1152703).

3120321 is a wasteful number, since it uses less digits than its factorization.

3120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28151.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 3120321 is about 1766.4430361605. The cubic root of 3120321 is about 146.1278825745.

Adding to 3120321 its reverse (1230213), we get a palindrome (4350534).

The spelling of 3120321 in words is "three million, one hundred twenty thousand, three hundred twenty-one".