40343 has 2 divisors, whose sum is σ = 40344.
Its totient is φ = 40342.
The previous prime is 40289. The next prime is 40351. The reversal of 40343 is 34304.
Adding to 40343 its reverse (34304), we get a palindrome (74647).
It can be divided in two parts, 40 and 343, that added together give a palindrome (383).
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 40343 - 28 = 40087 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (40543) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20171 + 20172.
It is an arithmetic number, because the mean of its divisors is an integer number (20172).
240343 is an apocalyptic number.
40343 is a deficient number, since it is larger than the sum of its proper divisors (1).
40343 is an equidigital number, since it uses as much as digits as its factorization.
40343 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 144, while the sum is 14.
The square root of 40343 is about 200.8556695740.
The cubic root of 40343 is about 34.2969944696.
The spelling of 40343 in words is "forty thousand, three hundred forty-three", and thus it is an iban number.