123147617 has 2 divisors, whose sum is σ = 123147618. Its totient is φ = 123147616.

The previous prime is 123147587. The next prime is 123147623. The reversal of 123147617 is 716741321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117310561 + 5837056 = 10831^2 + 2416^2 .

It is an emirp because it is prime and its reverse (716741321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123147617 - 2¹⁰ = 123146593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123147697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61573808 + 61573809.

It is an arithmetic number, because the mean of its divisors is an integer number (61573809).

Almost surely, 2^123147617 is an apocalyptic number.

It is an amenable number.

123147617 is a deficient number, since it is larger than the sum of its proper divisors (1).

123147617 is an equidigital number, since it uses as much as digits as its factorization.

123147617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 32.

The square root of 123147617 is about 11097.1895991733. The cubic root of 123147617 is about 497.5178542956.

Adding to 123147617 its reverse (716741321), we get a palindrome (839888938).

The spelling of 123147617 in words is "one hundred twenty-three million, one hundred forty-seven thousand, six hundred seventeen".