1233220312 has 16 divisors (see below), whose sum is σ = 2338270200. Its totient is φ = 609681600.

The previous prime is 1233220297. The next prime is 1233220319. The reversal of 1233220312 is 2130223321.

It is a self number, because there is not a number n which added to its sum of digits gives 1233220312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233220319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865314 + ... + 866737.

Almost surely, 2^1233220312 is an apocalyptic number.

It is an amenable number.

1233220312 is a deficient number, since it is larger than the sum of its proper divisors (1105049888).

1233220312 is a wasteful number, since it uses less digits than its factorization.

1233220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732146 (or 1732142 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1233220312 is about 35117.2366794428. The cubic root of 1233220312 is about 1072.3755158594.

Adding to 1233220312 its reverse (2130223321), we get a palindrome (3363443633).

The spelling of 1233220312 in words is "one billion, two hundred thirty-three million, two hundred twenty thousand, three hundred twelve".