203901 has 4 divisors (see below), whose sum is σ = 271872. Its totient is φ = 135932.

The previous prime is 203897. The next prime is 203909. The reversal of 203901 is 109302.

203901 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 203901 - 2² = 203897 is a prime.

It is a D-number.

203901 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33981 + ... + 33986.

It is an arithmetic number, because the mean of its divisors is an integer number (67968).

2²⁰³⁹⁰¹ is an apocalyptic number.

It is an amenable number.

203901 is a deficient number, since it is larger than the sum of its proper divisors (67971).

203901 is an equidigital number, since it uses as much as digits as its factorization.

203901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67970.

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

The square root of 203901 is about 451.5539834837. The cubic root of 203901 is about 58.8581289194.

The spelling of 203901 in words is "two hundred three thousand, nine hundred one".