231313312 has 24 divisors (see below), whose sum is σ = 456363936. Its totient is φ = 115411392.

The previous prime is 231313301. The next prime is 231313319. The reversal of 231313312 is 213313132.

231313312 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231313312.

It is not an unprimeable number, because it can be changed into a prime (231313319) 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, 8163 + ... + 23005.

It is an arithmetic number, because the mean of its divisors is an integer number (19015164).

Almost surely, 2^231313312 is an apocalyptic number.

It is an amenable number.

231313312 is a deficient number, since it is larger than the sum of its proper divisors (225050624).

231313312 is a wasteful number, since it uses less digits than its factorization.

231313312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15340 (or 15332 counting only the distinct ones).

The product of its digits is 324, while the sum is 19.

The square root of 231313312 is about 15208.9878690201. The cubic root of 231313312 is about 613.8565237514.

Adding to 231313312 its reverse (213313132), we get a palindrome (444626444).

It can be divided in two parts, 2313 and 13312, that added together give a 6-th power (15625 = 5⁶).

The spelling of 231313312 in words is "two hundred thirty-one million, three hundred thirteen thousand, three hundred twelve".