231234432 has 128 divisors (see below), whose sum is σ = 721768320. Its totient is φ = 64665600.

The previous prime is 231234403. The next prime is 231234449. The reversal of 231234432 is 234432132.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52807 + ... + 57017.

It is an arithmetic number, because the mean of its divisors is an integer number (5638815).

Almost surely, 2^231234432 is an apocalyptic number.

231234432 is a gapful number since it is divisible by the number (22) 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 231234432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360884160).

231234432 is an abundant number, since it is smaller than the sum of its proper divisors (490533888).

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

231234432 is a wasteful number, since it uses less digits than its factorization.

231234432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252 (or 4240 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

The square root of 231234432 is about 15206.3944444434. The cubic root of 231234432 is about 613.7867388823.

Adding to 231234432 its reverse (234432132), we get a palindrome (465666564).

The spelling of 231234432 in words is "two hundred thirty-one million, two hundred thirty-four thousand, four hundred thirty-two".