123173117 has 2 divisors, whose sum is σ = 123173118. Its totient is φ = 123173116.

The previous prime is 123173107. The next prime is 123173129. The reversal of 123173117 is 711371321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111809476 + 11363641 = 10574^2 + 3371^2 .

It is an emirp because it is prime and its reverse (711371321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123173117 - 2⁴ = 123173101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123173107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61586558 + 61586559.

It is an arithmetic number, because the mean of its divisors is an integer number (61586559).

Almost surely, 2^123173117 is an apocalyptic number.

It is an amenable number.

123173117 is a deficient number, since it is larger than the sum of its proper divisors (1).

123173117 is an equidigital number, since it uses as much as digits as its factorization.

123173117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 882, while the sum is 26.

The square root of 123173117 is about 11098.3384792499. The cubic root of 123173117 is about 497.5521920278.

The spelling of 123173117 in words is "one hundred twenty-three million, one hundred seventy-three thousand, one hundred seventeen".