231301312 has 56 divisors (see below), whose sum is σ = 505827792. Its totient is φ = 104064000.

The previous prime is 231301289. The next prime is 231301313. The reversal of 231301312 is 213103132.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (231301313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69478 + ... + 72730.

Almost surely, 2^231301312 is an apocalyptic number.

231301312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231301312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252913896).

231301312 is an abundant number, since it is smaller than the sum of its proper divisors (274526480).

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

231301312 is a wasteful number, since it uses less digits than its factorization.

231301312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377 (or 3367 counting only the distinct ones).

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

The square root of 231301312 is about 15208.5933603342. The cubic root of 231301312 is about 613.8459084153.

Adding to 231301312 its reverse (213103132), we get a palindrome (444404444).

It can be divided in two parts, 23130 and 1312, that added together give a palindrome (24442).

The spelling of 231301312 in words is "two hundred thirty-one million, three hundred one thousand, three hundred twelve".