123071717 has 2 divisors, whose sum is σ = 123071718. Its totient is φ = 123071716.

The previous prime is 123071677. The next prime is 123071747. The reversal of 123071717 is 717170321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88190881 + 34880836 = 9391^2 + 5906^2 .

It is a cyclic number.

It is not a de Polignac number, because 123071717 - 2¹² = 123067621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123071717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123071747) 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, 61535858 + 61535859.

It is an arithmetic number, because the mean of its divisors is an integer number (61535859).

Almost surely, 2^123071717 is an apocalyptic number.

It is an amenable number.

123071717 is a deficient number, since it is larger than the sum of its proper divisors (1).

123071717 is an equidigital number, since it uses as much as digits as its factorization.

123071717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2058, while the sum is 29.

The square root of 123071717 is about 11093.7692873072. The cubic root of 123071717 is about 497.4156209850.

The spelling of 123071717 in words is "one hundred twenty-three million, seventy-one thousand, seven hundred seventeen".