123116647 has 2 divisors, whose sum is σ = 123116648. Its totient is φ = 123116646.

The previous prime is 123116597. The next prime is 123116659. The reversal of 123116647 is 746611321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123116647 - 2⁷ = 123116519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123111647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61558323 + 61558324.

It is an arithmetic number, because the mean of its divisors is an integer number (61558324).

Almost surely, 2^123116647 is an apocalyptic number.

123116647 is a deficient number, since it is larger than the sum of its proper divisors (1).

123116647 is an equidigital number, since it uses as much as digits as its factorization.

123116647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 123116647 is about 11095.7941130863. The cubic root of 123116647 is about 497.4761444080.

Adding to 123116647 its reverse (746611321), we get a palindrome (869727968).

The spelling of 123116647 in words is "one hundred twenty-three million, one hundred sixteen thousand, six hundred forty-seven".