113121441 has 10 divisors (see below), whose sum is σ = 168984002. Its totient is φ = 75414240.

The previous prime is 113121409. The next prime is 113121461. The reversal of 113121441 is 144121311.

It can be written as a sum of positive squares in only one way, i.e., 101425041 + 11696400 = 10071^2 + 3420^2 .

It is not a de Polignac number, because 113121441 - 2⁵ = 113121409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (113121401) 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 9 ways as a sum of consecutive naturals, for example, 698200 + ... + 698361.

Almost surely, 2^113121441 is an apocalyptic number.

It is an amenable number.

113121441 is a deficient number, since it is larger than the sum of its proper divisors (55862561).

113121441 is an equidigital number, since it uses as much as digits as its factorization.

113121441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396573 (or 1396564 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 113121441 is about 10635.8563830093. The cubic root of 113121441 is about 483.6319416249.

Adding to 113121441 its reverse (144121311), we get a palindrome (257242752).

The spelling of 113121441 in words is "one hundred thirteen million, one hundred twenty-one thousand, four hundred forty-one".