197116243 has 2 divisors, whose sum is σ = 197116244. Its totient is φ = 197116242.

The previous prime is 197116237. The next prime is 197116267. The reversal of 197116243 is 342611791.

It is a weak prime.

It is an emirp because it is prime and its reverse (342611791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197116243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197116199 and 197116208.

It is not a weakly prime, because it can be changed into another prime (197116943) 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, 98558121 + 98558122.

It is an arithmetic number, because the mean of its divisors is an integer number (98558122).

Almost surely, 2^197116243 is an apocalyptic number.

197116243 is a deficient number, since it is larger than the sum of its proper divisors (1).

197116243 is an equidigital number, since it uses as much as digits as its factorization.

197116243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 197116243 is about 14039.8092223506. The cubic root of 197116243 is about 581.9792104539.

The spelling of 197116243 in words is "one hundred ninety-seven million, one hundred sixteen thousand, two hundred forty-three".