381803 has 8 divisors (see below), whose sum is σ = 415872. Its totient is φ = 349056.

The previous prime is 381793. The next prime is 381817. The reversal of 381803 is 308183.

381803 is nontrivially palindromic in base 14.

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 381803 - 2⁶ = 381739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381853) 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, 326 + ... + 932.

It is an arithmetic number, because the mean of its divisors is an integer number (51984).

2³⁸¹⁸⁰³ is an apocalyptic number.

381803 is a deficient number, since it is larger than the sum of its proper divisors (34069).

381803 is a wasteful number, since it uses less digits than its factorization.

381803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 381803 is about 617.9020958048. The cubic root of 381803 is about 72.5459399682.

Adding to 381803 its reverse (308183), we get a palindrome (689986).

It can be divided in two parts, 38180 and 3, that added together give a palindrome (38183).

The spelling of 381803 in words is "three hundred eighty-one thousand, eight hundred three".