113121344 has 56 divisors (see below), whose sum is σ = 265419840. Its totient is φ = 46803456.

The previous prime is 113121343. The next prime is 113121361. The reversal of 113121344 is 443121311.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113121341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8639 + ... + 17345.

It is an arithmetic number, because the mean of its divisors is an integer number (4739640).

Almost surely, 2^113121344 is an apocalyptic number.

113121344 is a gapful number since it is divisible by the number (14) 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 113121344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132709920).

113121344 is an abundant number, since it is smaller than the sum of its proper divisors (152298496).

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

113121344 is an equidigital number, since it uses as much as digits as its factorization.

113121344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8755 (or 8745 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 113121344 is about 10635.8518229618. The cubic root of 113121344 is about 483.6318033890.

Adding to 113121344 its reverse (443121311), we get a palindrome (556242655).

The spelling of 113121344 in words is "one hundred thirteen million, one hundred twenty-one thousand, three hundred forty-four".