203089 has 4 divisors (see below), whose sum is σ = 207856. Its totient is φ = 198324.

The previous prime is 203057. The next prime is 203117. The reversal of 203089 is 980302.

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, and also an emirpimes, since its reverse is a distinct semiprime: 980302 = 2 ⋅490151.

It is a cyclic number.

It is not a de Polignac number, because 203089 - 2⁵ = 203057 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (203039) 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, 2319 + ... + 2404.

It is an arithmetic number, because the mean of its divisors is an integer number (51964).

2²⁰³⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

203089 is a deficient number, since it is larger than the sum of its proper divisors (4767).

203089 is an equidigital number, since it uses as much as digits as its factorization.

203089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4766.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 203089 is about 450.6539692491. The cubic root of 203089 is about 58.7798942474.

The spelling of 203089 in words is "two hundred three thousand, eighty-nine".