123983617 has 2 divisors, whose sum is σ = 123983618. Its totient is φ = 123983616.

The previous prime is 123983609. The next prime is 123983687. The reversal of 123983617 is 716389321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69872881 + 54110736 = 8359^2 + 7356^2 .

It is an emirp because it is prime and its reverse (716389321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123983617 - 2³ = 123983609 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123983617.

It is not a weakly prime, because it can be changed into another prime (123983687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61991808 + 61991809.

It is an arithmetic number, because the mean of its divisors is an integer number (61991809).

Almost surely, 2^123983617 is an apocalyptic number.

It is an amenable number.

123983617 is a deficient number, since it is larger than the sum of its proper divisors (1).

123983617 is an equidigital number, since it uses as much as digits as its factorization.

123983617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 123983617 is about 11134.7930829450. The cubic root of 123983617 is about 498.6411329730.

The spelling of 123983617 in words is "one hundred twenty-three million, nine hundred eighty-three thousand, six hundred seventeen".