231840560 has 200 divisors, whose sum is σ = 675197856. Its totient is φ = 73758720.

The previous prime is 231840541. The next prime is 231840571. The reversal of 231840560 is 65048132.

231840560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231840560² = 107500090522227200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3265325 + ... + 3265395.

Almost surely, 2^231840560 is an apocalyptic number.

231840560 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 231840560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337598928).

231840560 is an abundant number, since it is smaller than the sum of its proper divisors (443357296).

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

231840560 is an equidigital number, since it uses as much as digits as its factorization.

231840560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 231840560 is about 15226.3114377711. The cubic root of 231840560 is about 614.3225713289.

Adding to 231840560 its reverse (65048132), we get a palindrome (296888692).

The spelling of 231840560 in words is "two hundred thirty-one million, eight hundred forty thousand, five hundred sixty".