231310312 has 16 divisors (see below), whose sum is σ = 442935360. Its totient is φ = 113194224.

The previous prime is 231310297. The next prime is 231310319. The reversal of 231310312 is 213013132.

231310312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231310319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307218 + ... + 307969.

It is an arithmetic number, because the mean of its divisors is an integer number (27683460).

Almost surely, 2^231310312 is an apocalyptic number.

It is an amenable number.

231310312 is a deficient number, since it is larger than the sum of its proper divisors (211625048).

231310312 is a wasteful number, since it uses less digits than its factorization.

231310312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615240 (or 615236 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 231310312 is about 15208.8892428080. The cubic root of 231310312 is about 613.8538699518.

Adding to 231310312 its reverse (213013132), we get a palindrome (444323444).

The spelling of 231310312 in words is "two hundred thirty-one million, three hundred ten thousand, three hundred twelve".