173331993 has 8 divisors (see below), whose sum is σ = 231170368. Its totient is φ = 115524144.

The previous prime is 173331973. The next prime is 173331997. The reversal of 173331993 is 399133371.

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

It is not a de Polignac number, because 173331993 - 2¹⁷ = 173200921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173331997) 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 7 ways as a sum of consecutive naturals, for example, 16755 + ... + 25047.

It is an arithmetic number, because the mean of its divisors is an integer number (28896296).

Almost surely, 2^173331993 is an apocalyptic number.

It is an amenable number.

173331993 is a deficient number, since it is larger than the sum of its proper divisors (57838375).

173331993 is an equidigital number, since it uses as much as digits as its factorization.

173331993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15263.

The product of its digits is 45927, while the sum is 39.

The square root of 173331993 is about 13165.5608691768. The cubic root of 173331993 is about 557.5616699996.

The spelling of 173331993 in words is "one hundred seventy-three million, three hundred thirty-one thousand, nine hundred ninety-three".