231232040 has 32 divisors (see below), whose sum is σ = 560294280. Its totient is φ = 85377792.

The previous prime is 231232009. The next prime is 231232061. The reversal of 231232040 is 40232132.

231232040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 84676804 + 146555236 = 9202^2 + 12106^2 .

It is an unprimeable number.

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, 221819 + ... + 222858.

Almost surely, 2^231232040 is an apocalyptic number.

231232040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231232040 is an abundant number, since it is smaller than the sum of its proper divisors (329062240).

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

231232040 is a wasteful number, since it uses less digits than its factorization.

231232040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444701 (or 444697 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 231232040 is about 15206.3157931170. The cubic root of 231232040 is about 613.7846224401.

Adding to 231232040 its reverse (40232132), we get a palindrome (271464172).

The spelling of 231232040 in words is "two hundred thirty-one million, two hundred thirty-two thousand, forty".