23447 has 2 divisors, whose sum is σ = 23448.
Its totient is φ = 23446.
The previous prime is 23431. The next prime is 23459. The reversal of 23447 is 74432.
Adding to 23447 its reverse (74432), we get a palindrome (97879).
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 23447 - 24 = 23431 is a prime.
It is a Chen prime.
It is a plaindrome in base 10 and base 12.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (23417) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11723 + 11724.
It is an arithmetic number, because the mean of its divisors is an integer number (11724).
223447 is an apocalyptic number.
23447 is a deficient number, since it is larger than the sum of its proper divisors (1).
23447 is an equidigital number, since it uses as much as digits as its factorization.
23447 is an evil number, because the sum of its binary digits is even.
The product of its digits is 672, while the sum is 20.
The square root of 23447 is about 153.1241326506.
The cubic root of 23447 is about 28.6217221319.
The spelling of 23447 in words is "twenty-three thousand, four hundred forty-seven", and thus it is an iban number.