231230234132240 has 160 divisors (see below), whose sum is σ = 615096102758400. Its totient is φ = 79190682734592.

The previous prime is 231230234132147. The next prime is 231230234132251. The reversal of 231230234132240 is 42231432032132.

It is a junction number, because it is equal to n+sod(n) for n = 231230234132197 and 231230234132206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1951959092 + ... + 1952077548.

It is an arithmetic number, because the mean of its divisors is an integer number (3844350642240).

Almost surely, 2^{231230234132240} is an apocalyptic number.

231230234132240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231230234132240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307548051379200).

231230234132240 is an abundant number, since it is smaller than the sum of its proper divisors (383865868626160).

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

231230234132240 is a wasteful number, since it uses less digits than its factorization.

231230234132240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122329 (or 122323 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 231230234132240 its reverse (42231432032132), we get a palindrome (273461666164372).

The spelling of 231230234132240 in words is "two hundred thirty-one trillion, two hundred thirty billion, two hundred thirty-four million, one hundred thirty-two thousand, two hundred forty".