201903 has 16 divisors (see below), whose sum is σ = 301056. Its totient is φ = 119520.

The previous prime is 201893. The next prime is 201907. The reversal of 201903 is 309102.

It is not a de Polignac number, because 201903 - 2¹² = 197807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1126 + ... + 1292.

It is an arithmetic number, because the mean of its divisors is an integer number (18816).

2²⁰¹⁹⁰³ is an apocalyptic number.

201903 is a deficient number, since it is larger than the sum of its proper divisors (99153).

201903 is a wasteful number, since it uses less digits than its factorization.

201903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 201903 is about 449.3361770434. The cubic root of 201903 is about 58.6652497649.

It can be divided in two parts, 201 and 903, that multiplied together give a triangular number (181503 = T₆₀₂).

The spelling of 201903 in words is "two hundred one thousand, nine hundred three".