123917197 has 2 divisors, whose sum is σ = 123917198. Its totient is φ = 123917196.

The previous prime is 123917177. The next prime is 123917207. The reversal of 123917197 is 791719321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94692361 + 29224836 = 9731^2 + 5406^2 .

It is a cyclic number.

It is not a de Polignac number, because 123917197 - 2¹⁹ = 123392909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123917147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61958598 + 61958599.

It is an arithmetic number, because the mean of its divisors is an integer number (61958599).

Almost surely, 2^123917197 is an apocalyptic number.

It is an amenable number.

123917197 is a deficient number, since it is larger than the sum of its proper divisors (1).

123917197 is an equidigital number, since it uses as much as digits as its factorization.

123917197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 40.

The square root of 123917197 is about 11131.8101403141. The cubic root of 123917197 is about 498.5520737331.

The spelling of 123917197 in words is "one hundred twenty-three million, nine hundred seventeen thousand, one hundred ninety-seven".