231303 has 4 divisors (see below), whose sum is σ = 308408. Its totient is φ = 154200.

The previous prime is 231299. The next prime is 231317. The reversal of 231303 is 303132.

It is a happy number.

231303 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 231303 - 2² = 231299 is a prime.

It is a D-number.

It is a Duffinian number.

231303 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231323) 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, 38548 + ... + 38553.

It is an arithmetic number, because the mean of its divisors is an integer number (77102).

2²³¹³⁰³ is an apocalyptic number.

231303 is a deficient number, since it is larger than the sum of its proper divisors (77105).

231303 is an equidigital number, since it uses as much as digits as its factorization.

231303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77104.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 231303 is about 480.9397051606. The cubic root of 231303 is about 61.3847401661.

Adding to 231303 its reverse (303132), we get a palindrome (534435).

It can be divided in two parts, 23 and 1303, that added together give a triangular number (1326 = T₅₁).

The spelling of 231303 in words is "two hundred thirty-one thousand, three hundred three".