1031440013244 has 144 divisors (see below), whose sum is σ = 2735714217600. Its totient is φ = 339772885056.

The previous prime is 1031440013239. The next prime is 1031440013327. The reversal of 1031440013244 is 4423100441301.

1031440013244 is a `hidden beast` number, since 1 + 0 + 3 + 1 + 4 + 400 + 13 + 244 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43565842 + ... + 43589510.

It is an arithmetic number, because the mean of its divisors is an integer number (18998015400).

Almost surely, 2^{1031440013244} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1031440013244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1367857108800).

1031440013244 is an abundant number, since it is smaller than the sum of its proper divisors (1704274204356).

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

1031440013244 is a wasteful number, since it uses less digits than its factorization.

1031440013244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24214 (or 24200 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1031440013244 its reverse (4423100441301), we get a palindrome (5454540454545).

The spelling of 1031440013244 in words is "one trillion, thirty-one billion, four hundred forty million, thirteen thousand, two hundred forty-four".