113440144 has 10 divisors (see below), whose sum is σ = 219790310. Its totient is φ = 56720064.

The previous prime is 113440139. The next prime is 113440147. The reversal of 113440144 is 441044311.

It can be written as a sum of positive squares in only one way, i.e., 111513600 + 1926544 = 10560^2 + 1388^2 .

It is not an unprimeable number, because it can be changed into a prime (113440147) 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 as a sum of consecutive naturals, namely, 3544989 + ... + 3545020.

It is an arithmetic number, because the mean of its divisors is an integer number (21979031).

Almost surely, 2^113440144 is an apocalyptic number.

It is an amenable number.

113440144 is a deficient number, since it is larger than the sum of its proper divisors (106350166).

113440144 is an equidigital number, since it uses as much as digits as its factorization.

113440144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7090017 (or 7090011 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 113440144 is about 10650.8283245952. The cubic root of 113440144 is about 484.0857030121.

Adding to 113440144 its reverse (441044311), we get a palindrome (554484455).

The spelling of 113440144 in words is "one hundred thirteen million, four hundred forty thousand, one hundred forty-four".