113447 has 4 divisors (see below), whose sum is σ = 116256. Its totient is φ = 110640.

The previous prime is 113437. The next prime is 113453. The reversal of 113447 is 744311.

113447 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744311 = 17 ⋅43783.

It is a cyclic number.

It is not a de Polignac number, because 113447 - 2⁶ = 113383 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10 and base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113417) 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 3 ways as a sum of consecutive naturals, for example, 1343 + ... + 1424.

It is an arithmetic number, because the mean of its divisors is an integer number (29064).

2¹¹³⁴⁴⁷ is an apocalyptic number.

113447 is a deficient number, since it is larger than the sum of its proper divisors (2809).

113447 is an equidigital number, since it uses as much as digits as its factorization.

113447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808.

The product of its digits is 336, while the sum is 20.

The square root of 113447 is about 336.8189424602. The cubic root of 113447 is about 48.4095455070.

Adding to 113447 its reverse (744311), we get a palindrome (857758).

The spelling of 113447 in words is "one hundred thirteen thousand, four hundred forty-seven".