113440131024440 has 128 divisors (see below), whose sum is σ = 283179632428800. Its totient is φ = 40549455774720.

The previous prime is 113440131024391. The next prime is 113440131024463. The reversal of 113440131024440 is 44420131044311.

It is a super-2 number, since 2×113440131024440² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113440131024397 and 113440131024406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 487750019 + ... + 487982541.

It is an arithmetic number, because the mean of its divisors is an integer number (2212340878350).

Almost surely, 2^{113440131024440} is an apocalyptic number.

113440131024440 is a gapful number since it is divisible by the number (10) 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 113440131024440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141589816214400).

113440131024440 is an abundant number, since it is smaller than the sum of its proper divisors (169739501404360).

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

113440131024440 is a wasteful number, since it uses less digits than its factorization.

113440131024440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251397 (or 251393 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 113440131024440 its reverse (44420131044311), we get a palindrome (157860262068751).

The spelling of 113440131024440 in words is "one hundred thirteen trillion, four hundred forty billion, one hundred thirty-one million, twenty-four thousand, four hundred forty".