381173 has 8 divisors (see below), whose sum is σ = 415800. Its totient is φ = 347328.

The previous prime is 381169. The next prime is 381181. The reversal of 381173 is 371183.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 484 + 380689 = 22^2 + 617^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 381173 - 2² = 381169 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 (381103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1283 + ... + 1551.

It is an arithmetic number, because the mean of its divisors is an integer number (51975).

2³⁸¹¹⁷³ is an apocalyptic number.

It is an amenable number.

381173 is a deficient number, since it is larger than the sum of its proper divisors (34627).

381173 is a wasteful number, since it uses less digits than its factorization.

381173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391.

The product of its digits is 504, while the sum is 23.

The square root of 381173 is about 617.3920958354. The cubic root of 381173 is about 72.5060161476.

The spelling of 381173 in words is "three hundred eighty-one thousand, one hundred seventy-three".