231803 has 8 divisors (see below), whose sum is σ = 272496. Its totient is φ = 194400.

The previous prime is 231799. The next prime is 231809. The reversal of 231803 is 308132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231803 - 2² = 231799 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231809) 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 7 ways as a sum of consecutive naturals, for example, 668 + ... + 953.

It is an arithmetic number, because the mean of its divisors is an integer number (34062).

2²³¹⁸⁰³ is an apocalyptic number.

231803 is a deficient number, since it is larger than the sum of its proper divisors (40693).

231803 is a wasteful number, since it uses less digits than its factorization.

231803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 231803 is about 481.4592402270. The cubic root of 231803 is about 61.4289394503.

Adding to 231803 its reverse (308132), we get a palindrome (539935).

The spelling of 231803 in words is "two hundred thirty-one thousand, eight hundred three".