1223303456 has 12 divisors (see below), whose sum is σ = 2408378742. Its totient is φ = 611651712.

The previous prime is 1223303453. The next prime is 1223303483. The reversal of 1223303456 is 6543033221.

It can be written as a sum of positive squares in only one way, i.e., 944947600 + 278355856 = 30740^2 + 16684^2 .

It is not an unprimeable number, because it can be changed into a prime (1223303453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19114085 + ... + 19114148.

Almost surely, 2^1223303456 is an apocalyptic number.

1223303456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1223303456 is a deficient number, since it is larger than the sum of its proper divisors (1185075286).

1223303456 is an equidigital number, since it uses as much as digits as its factorization.

1223303456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38228243 (or 38228235 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 1223303456 is about 34975.7552598940. The cubic root of 1223303456 is about 1069.4932983881.

Adding to 1223303456 its reverse (6543033221), we get a palindrome (7766336677).

The spelling of 1223303456 in words is "one billion, two hundred twenty-three million, three hundred three thousand, four hundred fifty-six".