3117917897 has 2 divisors, whose sum is σ = 3117917898. Its totient is φ = 3117917896.

The previous prime is 3117917843. The next prime is 3117917921. The reversal of 3117917897 is 7987197113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2760556681 + 357361216 = 52541^2 + 18904^2 .

It is a cyclic number.

It is not a de Polignac number, because 3117917897 - 2¹⁸ = 3117655753 is a prime.

It is not a weakly prime, because it can be changed into another prime (3117910897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1558958948 + 1558958949.

It is an arithmetic number, because the mean of its divisors is an integer number (1558958949).

Almost surely, 2^3117917897 is an apocalyptic number.

It is an amenable number.

3117917897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3117917897 is an equidigital number, since it uses as much as digits as its factorization.

3117917897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 666792, while the sum is 53.

The square root of 3117917897 is about 55838.3192530004. The cubic root of 3117917897 is about 1460.9035966800.

The spelling of 3117917897 in words is "three billion, one hundred seventeen million, nine hundred seventeen thousand, eight hundred ninety-seven".