1205203312 has 40 divisors (see below), whose sum is σ = 2493304704. Its totient is φ = 562989504.

The previous prime is 1205203297. The next prime is 1205203313. The reversal of 1205203312 is 2133025021.

It is a self number, because there is not a number n which added to its sum of digits gives 1205203312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205203313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22258 + ... + 53905.

Almost surely, 2^1205203312 is an apocalyptic number.

It is an amenable number.

1205203312 is an abundant number, since it is smaller than the sum of its proper divisors (1288101392).

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

1205203312 is a wasteful number, since it uses less digits than its factorization.

1205203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76237 (or 76231 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1205203312 is about 34716.0382532339. The cubic root of 1205203312 is about 1064.1922834504.

Adding to 1205203312 its reverse (2133025021), we get a palindrome (3338228333).

The spelling of 1205203312 in words is "one billion, two hundred five million, two hundred three thousand, three hundred twelve".