103145197 has 2 divisors, whose sum is σ = 103145198. Its totient is φ = 103145196.

The previous prime is 103145191. The next prime is 103145221. The reversal of 103145197 is 791541301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100922116 + 2223081 = 10046^2 + 1491^2 .

It is a cyclic number.

It is not a de Polignac number, because 103145197 - 2¹¹ = 103143149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103145191) 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, 51572598 + 51572599.

It is an arithmetic number, because the mean of its divisors is an integer number (51572599).

Almost surely, 2^103145197 is an apocalyptic number.

It is an amenable number.

103145197 is a deficient number, since it is larger than the sum of its proper divisors (1).

103145197 is an equidigital number, since it uses as much as digits as its factorization.

103145197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 103145197 is about 10156.0423886473. The cubic root of 103145197 is about 468.9749760472.

Adding to 103145197 its reverse (791541301), we get a palindrome (894686498).

The spelling of 103145197 in words is "one hundred three million, one hundred forty-five thousand, one hundred ninety-seven".