243205331413 has 16 divisors (see below), whose sum is σ = 269132336640. Its totient is φ = 217916431600.

The previous prime is 243205331387. The next prime is 243205331417. The reversal of 243205331413 is 314133502342.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 243205331413 - 2²⁹ = 242668460501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243205331417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2662818 + ... + 2752636.

It is an arithmetic number, because the mean of its divisors is an integer number (16820771040).

Almost surely, 2^243205331413 is an apocalyptic number.

It is an amenable number.

243205331413 is a deficient number, since it is larger than the sum of its proper divisors (25927005227).

243205331413 is a wasteful number, since it uses less digits than its factorization.

243205331413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93368.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 243205331413 its reverse (314133502342), we get a palindrome (557338833755).

The spelling of 243205331413 in words is "two hundred forty-three billion, two hundred five million, three hundred thirty-one thousand, four hundred thirteen".