3121163197 has 2 divisors, whose sum is σ = 3121163198. Its totient is φ = 3121163196.

The previous prime is 3121163191. The next prime is 3121163207. The reversal of 3121163197 is 7913611213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3086246916 + 34916281 = 55554^2 + 5909^2 .

It is an emirp because it is prime and its reverse (7913611213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3121163197 - 2¹⁹ = 3120638909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121163191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560581598 + 1560581599.

It is an arithmetic number, because the mean of its divisors is an integer number (1560581599).

Almost surely, 2^3121163197 is an apocalyptic number.

It is an amenable number.

3121163197 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121163197 is an equidigital number, since it uses as much as digits as its factorization.

3121163197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 3121163197 is about 55867.3714881951. The cubic root of 3121163197 is about 1461.4102837949.

The spelling of 3121163197 in words is "three billion, one hundred twenty-one million, one hundred sixty-three thousand, one hundred ninety-seven".