3111217 has 2 divisors, whose sum is σ = 3111218. Its totient is φ = 3111216.

The previous prime is 3111197. The next prime is 3111223. The reversal of 3111217 is 7121113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2547216 + 564001 = 1596^2 + 751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3111217 is a prime.

It is equal to p₂₂₄₂₅₁ and since 3111217 and 224251 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3111217.

It is not a weakly prime, because it can be changed into another prime (3111287) 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, 1555608 + 1555609.

It is an arithmetic number, because the mean of its divisors is an integer number (1555609).

Almost surely, 2^3111217 is an apocalyptic number.

It is an amenable number.

3111217 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111217 is an equidigital number, since it uses as much as digits as its factorization.

3111217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42, while the sum is 16.

The square root of 3111217 is about 1763.8642237996. The cubic root of 3111217 is about 145.9856275337.

The spelling of 3111217 in words is "three million, one hundred eleven thousand, two hundred seventeen".