1381127112 has 80 divisors (see below), whose sum is σ = 3889036800. Its totient is φ = 457924320.

The previous prime is 1381127093. The next prime is 1381127147. The reversal of 1381127112 is 2117211831.

1381127112 is a `hidden beast` number, since 1 + 381 + 1 + 271 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 in 19 ways as a sum of consecutive naturals, for example, 118189 + ... + 129347.

It is an arithmetic number, because the mean of its divisors is an integer number (48612960).

Almost surely, 2^1381127112 is an apocalyptic number.

1381127112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381127112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1944518400).

1381127112 is an abundant number, since it is smaller than the sum of its proper divisors (2507909688).

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

1381127112 is a wasteful number, since it uses less digits than its factorization.

1381127112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11368 (or 11355 counting only the distinct ones).

The product of its digits is 672, while the sum is 27.

The square root of 1381127112 is about 37163.5185632362. The cubic root of 1381127112 is about 1113.6393040341.

Adding to 1381127112 its reverse (2117211831), we get a palindrome (3498338943).

The spelling of 1381127112 in words is "one billion, three hundred eighty-one million, one hundred twenty-seven thousand, one hundred twelve".