231312432013 has 16 divisors (see below), whose sum is σ = 263732273280. Its totient is φ = 201112023744.

The previous prime is 231312432007. The next prime is 231312432017. The reversal of 231312432013 is 310234213132.

It is a cyclic number.

It is not a de Polignac number, because 231312432013 - 2²¹ = 231310334861 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 (231312432017) 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 15 ways as a sum of consecutive naturals, for example, 2663881 + ... + 2749342.

It is an arithmetic number, because the mean of its divisors is an integer number (16483267080).

Almost surely, 2^231312432013 is an apocalyptic number.

It is an amenable number.

231312432013 is a deficient number, since it is larger than the sum of its proper divisors (32419841267).

231312432013 is a wasteful number, since it uses less digits than its factorization.

231312432013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5413428.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 231312432013 its reverse (310234213132), we get a palindrome (541546645145).

The spelling of 231312432013 in words is "two hundred thirty-one billion, three hundred twelve million, four hundred thirty-two thousand, thirteen".