23173973 has 4 divisors (see below), whose sum is σ = 23302188. Its totient is φ = 23045760.

The previous prime is 23173967. The next prime is 23173981. The reversal of 23173973 is 37937132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3972049 + 19201924 = 1993^2 + 4382^2 .

It is a cyclic number.

It is not a de Polignac number, because 23173973 - 2¹⁰ = 23172949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23173933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63836 + ... + 64197.

It is an arithmetic number, because the mean of its divisors is an integer number (5825547).

Almost surely, 2^23173973 is an apocalyptic number.

It is an amenable number.

23173973 is a deficient number, since it is larger than the sum of its proper divisors (128215).

23173973 is a wasteful number, since it uses less digits than its factorization.

23173973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128214.

The product of its digits is 23814, while the sum is 35.

The square root of 23173973 is about 4813.9352924608. The cubic root of 23173973 is about 285.1019354254.

The spelling of 23173973 in words is "twenty-three million, one hundred seventy-three thousand, nine hundred seventy-three".