100803 has 4 divisors (see below), whose sum is σ = 134408. Its totient is φ = 67200.

The previous prime is 100801. The next prime is 100811. The reversal of 100803 is 308001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 308001 = 3 ⋅102667.

It is not a de Polignac number, because 100803 - 2¹ = 100801 is a prime.

It is a super-2 number, since 2×100803² = 20322489618, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16798 + ... + 16803.

It is an arithmetic number, because the mean of its divisors is an integer number (33602).

2¹⁰⁰⁸⁰³ is an apocalyptic number.

100803 is a deficient number, since it is larger than the sum of its proper divisors (33605).

100803 is an equidigital number, since it uses as much as digits as its factorization.

100803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33604.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 100803 is about 317.4948818485. The cubic root of 100803 is about 46.5397971242.

Adding to 100803 its reverse (308001), we get a palindrome (408804).

It can be divided in two parts, 100 and 803, that added together give a triangular number (903 = T₄₂).

The spelling of 100803 in words is "one hundred thousand, eight hundred three".