231313202013 has 16 divisors (see below), whose sum is σ = 315605125440. Its totient is φ = 150615381504.

The previous prime is 231313202009. The next prime is 231313202039. The reversal of 231313202013 is 310202313132.

It is not a de Polignac number, because 231313202013 - 2² = 231313202009 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313202053) 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, 4801795 + ... + 4849727.

It is an arithmetic number, because the mean of its divisors is an integer number (19725320340).

Almost surely, 2^231313202013 is an apocalyptic number.

It is an amenable number.

231313202013 is a deficient number, since it is larger than the sum of its proper divisors (84291923427).

231313202013 is a wasteful number, since it uses less digits than its factorization.

231313202013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85388.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231313202013 its reverse (310202313132), we get a palindrome (541515515145).

The spelling of 231313202013 in words is "two hundred thirty-one billion, three hundred thirteen million, two hundred two thousand, thirteen".