231069312 has 96 divisors (see below), whose sum is σ = 673608000. Its totient is φ = 76018176.

The previous prime is 231069301. The next prime is 231069313. The reversal of 231069312 is 213960132.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (231069313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89739 + ... + 92277.

It is an arithmetic number, because the mean of its divisors is an integer number (7016750).

Almost surely, 2^231069312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231069312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336804000).

231069312 is an abundant number, since it is smaller than the sum of its proper divisors (442538688).

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

231069312 is a wasteful number, since it uses less digits than its factorization.

231069312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 231069312 is about 15200.9641799460. The cubic root of 231069312 is about 613.6406063784.

The spelling of 231069312 in words is "two hundred thirty-one million, sixty-nine thousand, three hundred twelve".