303313223 has 4 divisors (see below), whose sum is σ = 309036168. Its totient is φ = 297590280.

The previous prime is 303313183. The next prime is 303313229. The reversal of 303313223 is 322313303.

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

It is a cyclic number.

It is not a de Polignac number, because 303313223 - 2¹⁸ = 303051079 is a prime.

It is a super-2 number, since 2×303313223² = 183997822493295458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 303313195 and 303313204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303313229) 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 3 ways as a sum of consecutive naturals, for example, 2861393 + ... + 2861498.

It is an arithmetic number, because the mean of its divisors is an integer number (77259042).

Almost surely, 2^303313223 is an apocalyptic number.

303313223 is a deficient number, since it is larger than the sum of its proper divisors (5722945).

303313223 is an equidigital number, since it uses as much as digits as its factorization.

303313223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5722944.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 303313223 is about 17415.8899571627. The cubic root of 303313223 is about 671.8883558564. Note that the first 3 decimals are identical.

Adding to 303313223 its reverse (322313303), we get a palindrome (625626526).

The spelling of 303313223 in words is "three hundred three million, three hundred thirteen thousand, two hundred twenty-three".