3120217 has 2 divisors, whose sum is σ = 3120218. Its totient is φ = 3120216.

The previous prime is 3120137. The next prime is 3120233. The reversal of 3120217 is 7120213.

It is a happy number.

It is an a-pointer prime, because the next prime (3120233) can be obtained adding 3120217 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2944656 + 175561 = 1716^2 + 419^2 .

It is an emirp because it is prime and its reverse (7120213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3120217 - 2¹¹ = 3118169 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3120217.

It is not a weakly prime, because it can be changed into another prime (3120277) 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 as a sum of consecutive naturals, namely, 1560108 + 1560109.

It is an arithmetic number, because the mean of its divisors is an integer number (1560109).

Almost surely, 2^3120217 is an apocalyptic number.

It is an amenable number.

3120217 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120217 is an equidigital number, since it uses as much as digits as its factorization.

3120217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 3120217 is about 1766.4135982266. The cubic root of 3120217 is about 146.1262590804.

The spelling of 3120217 in words is "three million, one hundred twenty thousand, two hundred seventeen".