231324132 has 96 divisors (see below), whose sum is σ = 606533760. Its totient is φ = 68152320.

The previous prime is 231324113. The next prime is 231324227. The reversal of 231324132 is 231423132.

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

It is a junction number, because it is equal to n+sod(n) for n = 231324099 and 231324108.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 377058 + ... + 377670.

It is an arithmetic number, because the mean of its divisors is an integer number (6318060).

Almost surely, 2^231324132 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 231324132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303266880).

231324132 is an abundant number, since it is smaller than the sum of its proper divisors (375209628).

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

231324132 is a wasteful number, since it uses less digits than its factorization.

231324132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 731 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 231324132 is about 15209.3435755788. The cubic root of 231324132 is about 613.8660949314.

Adding to 231324132 its reverse (231423132), we get a palindrome (462747264).

The spelling of 231324132 in words is "two hundred thirty-one million, three hundred twenty-four thousand, one hundred thirty-two".