231141548512 has 96 divisors (see below), whose sum is σ = 547950154752. Its totient is φ = 93833524224.

The previous prime is 231141548503. The next prime is 231141548531. The reversal of 231141548512 is 215845141132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312868 + ... + 748444.

It is an arithmetic number, because the mean of its divisors is an integer number (5707814112).

Almost surely, 2^231141548512 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 231141548512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273975077376).

231141548512 is an abundant number, since it is smaller than the sum of its proper divisors (316808606240).

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

231141548512 is a wasteful number, since it uses less digits than its factorization.

231141548512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435720 (or 435712 counting only the distinct ones).

The product of its digits is 38400, while the sum is 37.

Adding to 231141548512 its reverse (215845141132), we get a palindrome (446986689644).

The spelling of 231141548512 in words is "two hundred thirty-one billion, one hundred forty-one million, five hundred forty-eight thousand, five hundred twelve".