303123222 has 40 divisors (see below), whose sum is σ = 682149600. Its totient is φ = 100605456.

The previous prime is 303123173. The next prime is 303123251. The reversal of 303123222 is 222321303.

It is a happy number.

303123222 is a `hidden beast` number, since 30 + 312 + 322 + 2 = 666.

It is a super-2 number, since 2×303123222² = 183767375431322568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 303123195 and 303123204.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 34804 + ... + 42632.

It is an arithmetic number, because the mean of its divisors is an integer number (17053740).

Almost surely, 2^303123222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303123222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341074800).

303123222 is an abundant number, since it is smaller than the sum of its proper divisors (379026378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

303123222 is a wasteful number, since it uses less digits than its factorization.

303123222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8082 (or 8073 counting only the distinct ones).

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

The square root of 303123222 is about 17410.4342852210. The cubic root of 303123222 is about 671.7480321303.

Adding to 303123222 its reverse (222321303), we get a palindrome (525444525).

The spelling of 303123222 in words is "three hundred three million, one hundred twenty-three thousand, two hundred twenty-two".