231310310312 has 32 divisors (see below), whose sum is σ = 435810964680. Its totient is φ = 115095187200.

The previous prime is 231310310311. The next prime is 231310310369. The reversal of 231310310312 is 213013013132.

It can be written as a sum of positive squares in 4 ways, for example, as 214986159556 + 16324150756 = 463666^2 + 127766^2 .

It is not an unprimeable number, because it can be changed into a prime (231310310311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1572758 + ... + 1713530.

Almost surely, 2^231310310312 is an apocalyptic number.

It is an amenable number.

231310310312 is a deficient number, since it is larger than the sum of its proper divisors (204500654368).

231310310312 is a wasteful number, since it uses less digits than its factorization.

231310310312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141773 (or 141769 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 231310310312 its reverse (213013013132), we get a palindrome (444323323444).

The spelling of 231310310312 in words is "two hundred thirty-one billion, three hundred ten million, three hundred ten thousand, three hundred twelve".