3081217 has 2 divisors, whose sum is σ = 3081218. Its totient is φ = 3081216.

The previous prime is 3081203. The next prime is 3081223. The reversal of 3081217 is 7121803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2322576 + 758641 = 1524^2 + 871^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3081217 is a prime.

It is not a weakly prime, because it can be changed into another prime (3081017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1540608 + 1540609.

It is an arithmetic number, because the mean of its divisors is an integer number (1540609).

Almost surely, 2^3081217 is an apocalyptic number.

It is an amenable number.

3081217 is a deficient number, since it is larger than the sum of its proper divisors (1).

3081217 is an equidigital number, since it uses as much as digits as its factorization.

3081217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 3081217 is about 1755.3395682887. The cubic root of 3081217 is about 145.5148876883.

The spelling of 3081217 in words is "three million, eighty-one thousand, two hundred seventeen".