812303 has 4 divisors (see below), whose sum is σ = 821520. Its totient is φ = 803088.

The previous prime is 812299. The next prime is 812309. The reversal of 812303 is 303218.

812303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303218 = 2 ⋅151609.

It is a cyclic number.

It is not a de Polignac number, because 812303 - 2² = 812299 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812309) 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, 4475 + ... + 4652.

It is an arithmetic number, because the mean of its divisors is an integer number (205380).

2⁸¹²³⁰³ is an apocalyptic number.

812303 is a deficient number, since it is larger than the sum of its proper divisors (9217).

812303 is an equidigital number, since it uses as much as digits as its factorization.

812303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9216.

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

The square root of 812303 is about 901.2785363027. The cubic root of 812303 is about 93.3052367242.

The spelling of 812303 in words is "eight hundred twelve thousand, three hundred three".