123161173 has 16 divisors (see below), whose sum is σ = 135432000. Its totient is φ = 111549312.

The previous prime is 123161153. The next prime is 123161177. The reversal of 123161173 is 371161321.

It is a de Polignac number, because none of the positive numbers 2^k-123161173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123161177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57913 + ... + 60001.

It is an arithmetic number, because the mean of its divisors is an integer number (8464500).

Almost surely, 2^123161173 is an apocalyptic number.

It is an amenable number.

123161173 is a deficient number, since it is larger than the sum of its proper divisors (12270827).

123161173 is a wasteful number, since it uses less digits than its factorization.

123161173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its digits is 756, while the sum is 25.

The square root of 123161173 is about 11097.8003676404. The cubic root of 123161173 is about 497.5361090934.

The spelling of 123161173 in words is "one hundred twenty-three million, one hundred sixty-one thousand, one hundred seventy-three".