243134413 has 4 divisors (see below), whose sum is σ = 244103328. Its totient is φ = 242165500.

The previous prime is 243134401. The next prime is 243134417. The reversal of 243134413 is 314431342.

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 a de Polignac number, because none of the positive numbers 2^k-243134413 is a prime.

It is a super-2 number, since 2×243134413² = 118228685569709138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243134417) 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, 484081 + ... + 484582.

It is an arithmetic number, because the mean of its divisors is an integer number (61025832).

Almost surely, 2^243134413 is an apocalyptic number.

It is an amenable number.

243134413 is a deficient number, since it is larger than the sum of its proper divisors (968915).

243134413 is an equidigital number, since it uses as much as digits as its factorization.

243134413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968914.

The product of its digits is 3456, while the sum is 25.

The square root of 243134413 is about 15592.7679710820. The cubic root of 243134413 is about 624.1401834472.

Adding to 243134413 its reverse (314431342), we get a palindrome (557565755).

The spelling of 243134413 in words is "two hundred forty-three million, one hundred thirty-four thousand, four hundred thirteen".