1200103312 has 10 divisors (see below), whose sum is σ = 2325200198. Its totient is φ = 600051648.

The previous prime is 1200103301. The next prime is 1200103337. The reversal of 1200103312 is 2133010021.

It can be written as a sum of positive squares in only one way, i.e., 1021185936 + 178917376 = 31956^2 + 13376^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200103292 and 1200103301.

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, 37503213 + ... + 37503244.

Almost surely, 2^1200103312 is an apocalyptic number.

It is an amenable number.

1200103312 is a deficient number, since it is larger than the sum of its proper divisors (1125096886).

1200103312 is an equidigital number, since it uses as much as digits as its factorization.

1200103312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75006465 (or 75006459 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1200103312 is about 34642.5072995590. The cubic root of 1200103312 is about 1062.6890642470.

Adding to 1200103312 its reverse (2133010021), we get a palindrome (3333113333).

The spelling of 1200103312 in words is "one billion, two hundred million, one hundred three thousand, three hundred twelve".