173923345 has 8 divisors (see below), whose sum is σ = 220985064. Its totient is φ = 130953984.

The previous prime is 173923307. The next prime is 173923363. The reversal of 173923345 is 543329371.

It is a happy number.

173923345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 13188²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 4064256 + 169859089 = 2016^2 + 13033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173923345 is a prime.

It is a super-3 number, since 3×173923345³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022994 + ... + 1023163.

It is an arithmetic number, because the mean of its divisors is an integer number (27623133).

Almost surely, 2^173923345 is an apocalyptic number.

It is an amenable number.

173923345 is a deficient number, since it is larger than the sum of its proper divisors (47061719).

173923345 is a wasteful number, since it uses less digits than its factorization.

173923345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046179.

The product of its digits is 68040, while the sum is 37.

The square root of 173923345 is about 13188.0000379133. Note that the first 4 decimals coincide. The cubic root of 173923345 is about 558.1950228926.

The spelling of 173923345 in words is "one hundred seventy-three million, nine hundred twenty-three thousand, three hundred forty-five".