231104320 has 56 divisors (see below), whose sum is σ = 551995848. Its totient is φ = 92160000.

The previous prime is 231104303. The next prime is 231104347. The reversal of 231104320 is 23401132.

It is a happy number.

231104320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 44836416 + 186267904 = 6696^2 + 13648^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 231104294 and 231104303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127420 + ... + 129220.

Almost surely, 2^231104320 is an apocalyptic number.

231104320 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 231104320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275997924).

231104320 is an abundant number, since it is smaller than the sum of its proper divisors (320891528).

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

231104320 is a wasteful number, since it uses less digits than its factorization.

231104320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2209 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 231104320 is about 15202.1156422387. The cubic root of 231104320 is about 613.6715945487.

Adding to 231104320 its reverse (23401132), we get a palindrome (254505452).

The spelling of 231104320 in words is "two hundred thirty-one million, one hundred four thousand, three hundred twenty".