3117957397 has 2 divisors, whose sum is σ = 3117957398. Its totient is φ = 3117957396.

The previous prime is 3117957389. The next prime is 3117957407. The reversal of 3117957397 is 7937597113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2668135716 + 449821681 = 51654^2 + 21209^2 .

It is an emirp because it is prime and its reverse (7937597113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3117957397 - 2³ = 3117957389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3117957307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1558978698 + 1558978699.

It is an arithmetic number, because the mean of its divisors is an integer number (1558978699).

Almost surely, 2^3117957397 is an apocalyptic number.

It is an amenable number.

3117957397 is a deficient number, since it is larger than the sum of its proper divisors (1).

3117957397 is an equidigital number, since it uses as much as digits as its factorization.

3117957397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1250235, while the sum is 52.

The square root of 3117957397 is about 55838.6729516381. The cubic root of 3117957397 is about 1460.9097659090.

The spelling of 3117957397 in words is "three billion, one hundred seventeen million, nine hundred fifty-seven thousand, three hundred ninety-seven".