231988824 has 96 divisors (see below), whose sum is σ = 651596400. Its totient is φ = 74511360.

The previous prime is 231988751. The next prime is 231988837. The reversal of 231988824 is 428889132.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 231988824.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 262287 + ... + 263169.

Almost surely, 2^231988824 is an apocalyptic number.

231988824 is a gapful number since it is divisible by the number (24) 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 231988824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325798200).

231988824 is an abundant number, since it is smaller than the sum of its proper divisors (419607576).

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

231988824 is a wasteful number, since it uses less digits than its factorization.

231988824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025 (or 1018 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 231988824 is about 15231.1793371360. The cubic root of 231988824 is about 614.4534982509.

The spelling of 231988824 in words is "two hundred thirty-one million, nine hundred eighty-eight thousand, eight hundred twenty-four".