1223200312 has 8 divisors (see below), whose sum is σ = 2293500600. Its totient is φ = 611600152.

The previous prime is 1223200291. The next prime is 1223200339. The reversal of 1223200312 is 2130023221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 76450012 + ... + 76450027.

It is an arithmetic number, because the mean of its divisors is an integer number (286687575).

Almost surely, 2^1223200312 is an apocalyptic number.

It is an amenable number.

1223200312 is a deficient number, since it is larger than the sum of its proper divisors (1070300288).

1223200312 is a wasteful number, since it uses less digits than its factorization.

1223200312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152900045 (or 152900041 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1223200312 is about 34974.2807216961. The cubic root of 1223200312 is about 1069.4632390934.

Adding to 1223200312 its reverse (2130023221), we get a palindrome (3353223533).

The spelling of 1223200312 in words is "one billion, two hundred twenty-three million, two hundred thousand, three hundred twelve".