231012432 has 160 divisors (see below), whose sum is σ = 768204800. Its totient is φ = 65100672.

The previous prime is 231012427. The next prime is 231012479. The reversal of 231012432 is 234210132.

231012432 is a `hidden beast` number, since 231 + 0 + 1 + 2 + 432 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238413 + ... + 239379.

It is an arithmetic number, because the mean of its divisors is an integer number (4801280).

Almost surely, 2^231012432 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 231012432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384102400).

231012432 is an abundant number, since it is smaller than the sum of its proper divisors (537192368).

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

231012432 is a wasteful number, since it uses less digits than its factorization.

231012432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231012432 is about 15199.0931308417. The cubic root of 231012432 is about 613.5902510085.

Adding to 231012432 its reverse (234210132), we get a palindrome (465222564).

The spelling of 231012432 in words is "two hundred thirty-one million, twelve thousand, four hundred thirty-two".