623303 has 2 divisors, whose sum is σ = 623304. Its totient is φ = 623302.

The previous prime is 623299. The next prime is 623321. The reversal of 623303 is 303326.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623303 - 2² = 623299 is a prime.

It is a d-powerful number, because it can be written as 6² + 2¹⁵ + 3² + 3¹⁰ + 0 + 3¹² .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311651 + 311652.

It is an arithmetic number, because the mean of its divisors is an integer number (311652).

2⁶²³³⁰³ is an apocalyptic number.

623303 is a deficient number, since it is larger than the sum of its proper divisors (1).

623303 is an equidigital number, since it uses as much as digits as its factorization.

623303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 623303 is about 789.4954084730. The cubic root of 623303 is about 85.4213450805.

Subtracting from 623303 its sum of digits (17), we obtain a triangular number (623286 = T₁₁₁₆).

Adding to 623303 its reverse (303326), we get a palindrome (926629).

The spelling of 623303 in words is "six hundred twenty-three thousand, three hundred three".