715311217 has 2 divisors, whose sum is σ = 715311218. Its totient is φ = 715311216.

The previous prime is 715311199. The next prime is 715311239. The reversal of 715311217 is 712113517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 647397136 + 67914081 = 25444^2 + 8241^2 .

It is an emirp because it is prime and its reverse (712113517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 715311217 - 2⁷ = 715311089 is a prime.

It is not a weakly prime, because it can be changed into another prime (715311287) 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, 357655608 + 357655609.

It is an arithmetic number, because the mean of its divisors is an integer number (357655609).

Almost surely, 2^715311217 is an apocalyptic number.

It is an amenable number.

715311217 is a deficient number, since it is larger than the sum of its proper divisors (1).

715311217 is an equidigital number, since it uses as much as digits as its factorization.

715311217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1470, while the sum is 28.

The square root of 715311217 is about 26745.3027090740. The cubic root of 715311217 is about 894.3311240988.

The spelling of 715311217 in words is "seven hundred fifteen million, three hundred eleven thousand, two hundred seventeen".