231310020213 has 24 divisors (see below), whose sum is σ = 334519567200. Its totient is φ = 154019841504.

The previous prime is 231310020211. The next prime is 231310020241. The reversal of 231310020213 is 312020013132.

It is not a de Polignac number, because 231310020213 - 2¹ = 231310020211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310020211) 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 23 ways as a sum of consecutive naturals, for example, 36201223 + ... + 36207611.

It is an arithmetic number, because the mean of its divisors is an integer number (13938315300).

Almost surely, 2^231310020213 is an apocalyptic number.

It is an amenable number.

231310020213 is a deficient number, since it is larger than the sum of its proper divisors (103209546987).

231310020213 is a wasteful number, since it uses less digits than its factorization.

231310020213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10641 (or 10638 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 231310020213 its reverse (312020013132), we get a palindrome (543330033345).

The spelling of 231310020213 in words is "two hundred thirty-one billion, three hundred ten million, twenty thousand, two hundred thirteen".