123173873 has 2 divisors, whose sum is σ = 123173874. Its totient is φ = 123173872.

The previous prime is 123173807. The next prime is 123173917. The reversal of 123173873 is 378371321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91623184 + 31550689 = 9572^2 + 5617^2 .

It is a cyclic number.

It is not a de Polignac number, because 123173873 - 2¹⁸ = 122911729 is a prime.

It is not a weakly prime, because it can be changed into another prime (123173173) 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, 61586936 + 61586937.

It is an arithmetic number, because the mean of its divisors is an integer number (61586937).

Almost surely, 2^123173873 is an apocalyptic number.

It is an amenable number.

123173873 is a deficient number, since it is larger than the sum of its proper divisors (1).

123173873 is an equidigital number, since it uses as much as digits as its factorization.

123173873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 123173873 is about 11098.3725383499. The cubic root of 123173873 is about 497.5532099683.

The spelling of 123173873 in words is "one hundred twenty-three million, one hundred seventy-three thousand, eight hundred seventy-three".