113144621 has 4 divisors (see below), whose sum is σ = 113168544. Its totient is φ = 113120700.

The previous prime is 113144617. The next prime is 113144623. The reversal of 113144621 is 126441311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113144621 - 2² = 113144617 is a prime.

It is a super-2 number, since 2×113144621² = 25603410522467282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113144623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225 + ... + 15206.

It is an arithmetic number, because the mean of its divisors is an integer number (28292136).

Almost surely, 2^113144621 is an apocalyptic number.

It is an amenable number.

113144621 is a deficient number, since it is larger than the sum of its proper divisors (23923).

113144621 is an equidigital number, since it uses as much as digits as its factorization.

113144621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23922.

The product of its digits is 576, while the sum is 23.

The square root of 113144621 is about 10636.9460372797. The cubic root of 113144621 is about 483.6649734494.

Adding to 113144621 its reverse (126441311), we get a palindrome (239585932).

The spelling of 113144621 in words is "one hundred thirteen million, one hundred forty-four thousand, six hundred twenty-one".