231296280 has 128 divisors (see below), whose sum is σ = 729630720. Its totient is φ = 58544640.

The previous prime is 231296207. The next prime is 231296281. The reversal of 231296280 is 82692132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231296281) 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 31 ways as a sum of consecutive naturals, for example, 499329 + ... + 499791.

It is an arithmetic number, because the mean of its divisors is an integer number (5700240).

Almost surely, 2^231296280 is an apocalyptic number.

231296280 is a gapful number since it is divisible by the number (20) 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 231296280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364815360).

231296280 is an abundant number, since it is smaller than the sum of its proper divisors (498334440).

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

231296280 is a wasteful number, since it uses less digits than its factorization.

231296280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 231296280 is about 15208.4279266465. The cubic root of 231296280 is about 613.8414569418.

The spelling of 231296280 in words is "two hundred thirty-one million, two hundred ninety-six thousand, two hundred eighty".