231321010312 has 16 divisors (see below), whose sum is σ = 495687879360. Its totient is φ = 99137575824.

The previous prime is 231321010279. The next prime is 231321010351. The reversal of 231321010312 is 213010123132.

It is a self number, because there is not a number n which added to its sum of digits gives 231321010312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2065366108 + ... + 2065366219.

It is an arithmetic number, because the mean of its divisors is an integer number (30980492460).

Almost surely, 2^231321010312 is an apocalyptic number.

It is an amenable number.

231321010312 is an abundant number, since it is smaller than the sum of its proper divisors (264366869048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231321010312 is a wasteful number, since it uses less digits than its factorization.

231321010312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130732340 (or 4130732336 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 231321010312 its reverse (213010123132), we get a palindrome (444331133444).

The spelling of 231321010312 in words is "two hundred thirty-one billion, three hundred twenty-one million, ten thousand, three hundred twelve".