101903 has 4 divisors (see below), whose sum is σ = 102648. Its totient is φ = 101160.

The previous prime is 101891. The next prime is 101917. The reversal of 101903 is 309101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 101903 - 2⁶ = 101839 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101963) 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, 101 + ... + 462.

It is an arithmetic number, because the mean of its divisors is an integer number (25662).

2¹⁰¹⁹⁰³ is an apocalyptic number.

101903 is a deficient number, since it is larger than the sum of its proper divisors (745).

101903 is an equidigital number, since it uses as much as digits as its factorization.

101903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 101903 is about 319.2224929418. Note that the first 3 decimals coincide. The cubic root of 101903 is about 46.7084716094.

The spelling of 101903 in words is "one hundred one thousand, nine hundred three".