403243 has 2 divisors, whose sum is σ = 403244. Its totient is φ = 403242.

The previous prime is 403241. The next prime is 403253. The reversal of 403243 is 342304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 403243 - 2¹ = 403241 is a prime.

Together with 403241, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (403241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201621 + 201622.

It is an arithmetic number, because the mean of its divisors is an integer number (201622).

2⁴⁰³²⁴³ is an apocalyptic number.

403243 is a deficient number, since it is larger than the sum of its proper divisors (1).

403243 is an equidigital number, since it uses as much as digits as its factorization.

403243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 403243 is about 635.0141730702. The cubic root of 403243 is about 73.8792161592.

Adding to 403243 its reverse (342304), we get a palindrome (745547).

It can be divided in two parts, 403 and 243, that added together give a palindrome (646).

The spelling of 403243 in words is "four hundred three thousand, two hundred forty-three", and thus it is an iban number.