303221223 has 12 divisors (see below), whose sum is σ = 438451728. Its totient is φ = 201932640.

The previous prime is 303221207. The next prime is 303221287. The reversal of 303221223 is 322122303.

It is a happy number.

It is not a de Polignac number, because 303221223 - 2⁴ = 303221207 is a prime.

It is a super-2 number, since 2×303221223² = 183886220155231458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 303221196 and 303221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303221123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8718 + ... + 26123.

It is an arithmetic number, because the mean of its divisors is an integer number (36537644).

Almost surely, 2^303221223 is an apocalyptic number.

303221223 is a deficient number, since it is larger than the sum of its proper divisors (135230505).

303221223 is a wasteful number, since it uses less digits than its factorization.

303221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35814 (or 35811 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 303221223 is about 17413.2484907326. The cubic root of 303221223 is about 671.8204173088.

Adding to 303221223 its reverse (322122303), we get a palindrome (625343526).

The spelling of 303221223 in words is "three hundred three million, two hundred twenty-one thousand, two hundred twenty-three".