231310432 has 48 divisors (see below), whose sum is σ = 483764400. Its totient is φ = 108494848.

The previous prime is 231310411. The next prime is 231310433. The reversal of 231310432 is 234013132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243783 + ... + 244729.

It is an arithmetic number, because the mean of its divisors is an integer number (10078425).

Almost surely, 2^231310432 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 231310432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241882200).

231310432 is an abundant number, since it is smaller than the sum of its proper divisors (252453968).

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

231310432 is a wasteful number, since it uses less digits than its factorization.

231310432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423 (or 1415 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231310432 is about 15208.8931878687. The cubic root of 231310432 is about 613.8539761042.

Adding to 231310432 its reverse (234013132), we get a palindrome (465323564).

The spelling of 231310432 in words is "two hundred thirty-one million, three hundred ten thousand, four hundred thirty-two".