231808896 has 144 divisors (see below), whose sum is σ = 733649280. Its totient is φ = 70202880.

The previous prime is 231808891. The next prime is 231808901. The reversal of 231808896 is 698808132.

It is an interprime number because it is at equal distance from previous prime (231808891) and next prime (231808901).

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231808891) 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 17 ways as a sum of consecutive naturals, for example, 138561 + ... + 140223.

Almost surely, 2^231808896 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 231808896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366824640).

231808896 is an abundant number, since it is smaller than the sum of its proper divisors (501840384).

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

231808896 is a wasteful number, since it uses less digits than its factorization.

231808896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 231808896 is about 15225.2716231928. The cubic root of 231808896 is about 614.2946026889.

The spelling of 231808896 in words is "two hundred thirty-one million, eight hundred eight thousand, eight hundred ninety-six".