243413 has 4 divisors (see below), whose sum is σ = 248640. Its totient is φ = 238188.

The previous prime is 243403. The next prime is 243421. The reversal of 243413 is 314342.

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 243413 - 2⁸ = 243157 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 4⁷ + 4⁷ + 3⁶ + 1 + 3¹¹ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243391 and 243400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2543 + ... + 2636.

It is an arithmetic number, because the mean of its divisors is an integer number (62160).

2²⁴³⁴¹³ is an apocalyptic number.

It is an amenable number.

243413 is a deficient number, since it is larger than the sum of its proper divisors (5227).

243413 is an equidigital number, since it uses as much as digits as its factorization.

243413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226.

The product of its digits is 288, while the sum is 17.

The square root of 243413 is about 493.3690302400. The cubic root of 243413 is about 62.4378475470.

Adding to 243413 its reverse (314342), we get a palindrome (557755).

It can be divided in two parts, 243 and 413, that added together give a palindrome (656).

The spelling of 243413 in words is "two hundred forty-three thousand, four hundred thirteen".