3118321 has 4 divisors (see below), whose sum is σ = 3218944. Its totient is φ = 3017700.

The previous prime is 3118319. The next prime is 3118333. The reversal of 3118321 is 1238113.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1238113 = 23 ⋅53831.

It is a cyclic number.

It is not a de Polignac number, because 3118321 - 2¹ = 3118319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3118721) 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, 50265 + ... + 50326.

It is an arithmetic number, because the mean of its divisors is an integer number (804736).

Almost surely, 2^3118321 is an apocalyptic number.

3118321 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3118321 is a deficient number, since it is larger than the sum of its proper divisors (100623).

3118321 is a wasteful number, since it uses less digits than its factorization.

3118321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100622.

The product of its digits is 144, while the sum is 19.

The square root of 3118321 is about 1765.8768360223. The cubic root of 3118321 is about 146.0966552074.

The spelling of 3118321 in words is "three million, one hundred eighteen thousand, three hundred twenty-one".