381003 has 8 divisors (see below), whose sum is σ = 580608. Its totient is φ = 217704.

The previous prime is 381001. The next prime is 381011. The reversal of 381003 is 300183.

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

It is not a de Polignac number, because 381003 - 2¹ = 381001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9051 + ... + 9092.

It is an arithmetic number, because the mean of its divisors is an integer number (72576).

2³⁸¹⁰⁰³ is an apocalyptic number.

381003 is a deficient number, since it is larger than the sum of its proper divisors (199605).

381003 is a wasteful number, since it uses less digits than its factorization.

381003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18153.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 381003 is about 617.2544046015. The cubic root of 381003 is about 72.4952355173.

Adding to 381003 its reverse (300183), we get a palindrome (681186).

The spelling of 381003 in words is "three hundred eighty-one thousand, three".