1123400031112 has 16 divisors (see below), whose sum is σ = 2106386795340. Its totient is φ = 561696885696.

The previous prime is 1123400031109. The next prime is 1123400031163. The reversal of 1123400031112 is 2111300043211.

It can be written as a sum of positive squares in 2 ways, for example, as 1085318069796 + 38081961316 = 1041786^2 + 195146^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1123400031112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1978678 + ... + 2482330.

Almost surely, 2^{1123400031112} is an apocalyptic number.

It is an amenable number.

1123400031112 is a deficient number, since it is larger than the sum of its proper divisors (982986764228).

1123400031112 is a wasteful number, since it uses less digits than its factorization.

1123400031112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782472 (or 782468 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1123400031112 its reverse (2111300043211), we get a palindrome (3234700074323).

The spelling of 1123400031112 in words is "one trillion, one hundred twenty-three billion, four hundred million, thirty-one thousand, one hundred twelve".