231881832 has 256 divisors, whose sum is σ = 812851200. Its totient is φ = 59616000.

The previous prime is 231881813. The next prime is 231881857. The reversal of 231881832 is 238188132.

231881832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 923707 + ... + 923957.

It is an arithmetic number, because the mean of its divisors is an integer number (3175200).

Almost surely, 2^231881832 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 231881832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406425600).

231881832 is an abundant number, since it is smaller than the sum of its proper divisors (580969368).

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

231881832 is a wasteful number, since it uses less digits than its factorization.

231881832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 323 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 231881832 is about 15227.6666630183. Note that the first 5 decimals coincide. The cubic root of 231881832 is about 614.3590228408.

The spelling of 231881832 in words is "two hundred thirty-one million, eight hundred eighty-one thousand, eight hundred thirty-two".