1001131044 has 12 divisors (see below), whose sum is σ = 2335972464. Its totient is φ = 333710344.

The previous prime is 1001131013. The next prime is 1001131049. The reversal of 1001131044 is 4401311001.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1001131049) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 41713782 + ... + 41713805.

It is an arithmetic number, because the mean of its divisors is an integer number (194664372).

Almost surely, 2^1001131044 is an apocalyptic number.

It is an amenable number.

1001131044 is an abundant number, since it is smaller than the sum of its proper divisors (1334841420).

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

1001131044 is a wasteful number, since it uses less digits than its factorization.

1001131044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83427594 (or 83427592 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1001131044 is about 31640.6549236896. The cubic root of 1001131044 is about 1000.3768726159.

Adding to 1001131044 its reverse (4401311001), we get a palindrome (5402442045).

The spelling of 1001131044 in words is "one billion, one million, one hundred thirty-one thousand, forty-four".