1200113312 has 12 divisors (see below), whose sum is σ = 2362723146. Its totient is φ = 600056640.

The previous prime is 1200113311. The next prime is 1200113347. The reversal of 1200113312 is 2133110021.

It can be written as a sum of positive squares in only one way, i.e., 1197436816 + 2676496 = 34604^2 + 1636^2 .

It is not an unprimeable number, because it can be changed into a prime (1200113311) by changing a digit.

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 as a sum of consecutive naturals, namely, 18751739 + ... + 18751802.

Almost surely, 2^1200113312 is an apocalyptic number.

It is an amenable number.

1200113312 is a deficient number, since it is larger than the sum of its proper divisors (1162609834).

1200113312 is an equidigital number, since it uses as much as digits as its factorization.

1200113312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37503551 (or 37503543 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1200113312 is about 34642.6516306128. The cubic root of 1200113312 is about 1062.6920158987.

Adding to 1200113312 its reverse (2133110021), we get a palindrome (3333223333).

The spelling of 1200113312 in words is "one billion, two hundred million, one hundred thirteen thousand, three hundred twelve".