13173923 has 4 divisors (see below), whose sum is σ = 15055920. Its totient is φ = 11291928.

The previous prime is 13173911. The next prime is 13173931. The reversal of 13173923 is 32937131.

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

It is a cyclic number.

It is not a de Polignac number, because 13173923 - 2⁴ = 13173907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13173943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940988 + ... + 941001.

It is an arithmetic number, because the mean of its divisors is an integer number (3763980).

Almost surely, 2^13173923 is an apocalyptic number.

13173923 is a deficient number, since it is larger than the sum of its proper divisors (1881997).

13173923 is an equidigital number, since it uses as much as digits as its factorization.

13173923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881996.

The product of its digits is 3402, while the sum is 29.

The square root of 13173923 is about 3629.5899217405. The cubic root of 13173923 is about 236.1774197319.

The spelling of 13173923 in words is "thirteen million, one hundred seventy-three thousand, nine hundred twenty-three".