231313112312 has 8 divisors (see below), whose sum is σ = 433712085600. Its totient is φ = 115656556152.

The previous prime is 231313112311. The next prime is 231313112321. The reversal of 231313112312 is 213211313132.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313112311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14457069512 + ... + 14457069527.

It is an arithmetic number, because the mean of its divisors is an integer number (54214010700).

Almost surely, 2^231313112312 is an apocalyptic number.

It is an amenable number.

231313112312 is a deficient number, since it is larger than the sum of its proper divisors (202398973288).

231313112312 is a wasteful number, since it uses less digits than its factorization.

231313112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28914139045 (or 28914139041 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 231313112312 its reverse (213211313132), we get a palindrome (444524425444).

The spelling of 231313112312 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred twelve thousand, three hundred twelve".