203081 has 4 divisors (see below), whose sum is σ = 209664. Its totient is φ = 196500.

The previous prime is 203057. The next prime is 203117. The reversal of 203081 is 180302.

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 203081 - 2⁶ = 203017 is a prime.

It is a super-2 number, since 2×203081² = 82483785122, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 203081.

It is not an unprimeable number, because it can be changed into a prime (203011) 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, 3245 + ... + 3306.

It is an arithmetic number, because the mean of its divisors is an integer number (52416).

2²⁰³⁰⁸¹ is an apocalyptic number.

It is an amenable number.

203081 is a deficient number, since it is larger than the sum of its proper divisors (6583).

203081 is an equidigital number, since it uses as much as digits as its factorization.

203081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6582.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 203081 is about 450.6450931720. The cubic root of 203081 is about 58.7791224259.

Adding to 203081 its reverse (180302), we get a palindrome (383383).

The spelling of 203081 in words is "two hundred three thousand, eighty-one".