231330243040013 has 4 divisors (see below), whose sum is σ = 249124877120028. Its totient is φ = 213535608960000.

The previous prime is 231330243039997. The next prime is 231330243040021. The reversal of 231330243040013 is 310040342033132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77189526063049 + 154140716976964 = 8785757^2 + 12415342^2 .

It is a cyclic number.

It is not a de Polignac number, because 231330243040013 - 2⁴ = 231330243039997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231330243040613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8897317039988 + ... + 8897317040013.

It is an arithmetic number, because the mean of its divisors is an integer number (62281219280007).

Almost surely, 2^{231330243040013} is an apocalyptic number.

It is an amenable number.

231330243040013 is a deficient number, since it is larger than the sum of its proper divisors (17794634080015).

231330243040013 is a wasteful number, since it uses less digits than its factorization.

231330243040013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17794634080014.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 231330243040013 its reverse (310040342033132), we get a palindrome (541370585073145).

The spelling of 231330243040013 in words is "two hundred thirty-one trillion, three hundred thirty billion, two hundred forty-three million, forty thousand, thirteen".