30795217 has 2 divisors, whose sum is σ = 30795218. Its totient is φ = 30795216.

The previous prime is 30795197. The next prime is 30795251. The reversal of 30795217 is 71259703.

30795217 is nontrivially palindromic in base 16.

It is an a-pointer prime, because the next prime (30795251) can be obtained adding 30795217 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25040016 + 5755201 = 5004^2 + 2399^2 .

It is an emirp because it is prime and its reverse (71259703) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30795217 is a prime.

It is not a weakly prime, because it can be changed into another prime (30795287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15397608 + 15397609.

It is an arithmetic number, because the mean of its divisors is an integer number (15397609).

Almost surely, 2^30795217 is an apocalyptic number.

It is an amenable number.

30795217 is a deficient number, since it is larger than the sum of its proper divisors (1).

30795217 is an equidigital number, since it uses as much as digits as its factorization.

30795217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 30795217 is about 5549.3438350854. The cubic root of 30795217 is about 313.4448145891. Note that the first 3 decimals are identical.

The spelling of 30795217 in words is "thirty million, seven hundred ninety-five thousand, two hundred seventeen".