231213011013 has 12 divisors (see below), whose sum is σ = 333982929280. Its totient is φ = 154138047336.

The previous prime is 231213011011. The next prime is 231213011039. The reversal of 231213011013 is 310110312132.

231213011013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231213011013 - 2¹ = 231213011011 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 (231213011011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64620 + ... + 683082.

Almost surely, 2^231213011013 is an apocalyptic number.

It is an amenable number.

231213011013 is a deficient number, since it is larger than the sum of its proper divisors (102769918267).

231213011013 is a wasteful number, since it uses less digits than its factorization.

231213011013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660008 (or 660005 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 231213011013 its reverse (310110312132), we get a palindrome (541323323145).

The spelling of 231213011013 in words is "two hundred thirty-one billion, two hundred thirteen million, eleven thousand, thirteen".