231131241244 has 12 divisors (see below), whose sum is σ = 404505494568. Its totient is φ = 115558242800.

The previous prime is 231131241217. The next prime is 231131241247. The reversal of 231131241244 is 442142131132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231131241247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1773667 + ... + 1899514.

It is an arithmetic number, because the mean of its divisors is an integer number (33708791214).

Almost surely, 2^231131241244 is an apocalyptic number.

It is an amenable number.

231131241244 is a deficient number, since it is larger than the sum of its proper divisors (173374253324).

231131241244 is a wasteful number, since it uses less digits than its factorization.

231131241244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688916 (or 3688914 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 231131241244 its reverse (442142131132), we get a palindrome (673273372376).

The spelling of 231131241244 in words is "two hundred thirty-one billion, one hundred thirty-one million, two hundred forty-one thousand, two hundred forty-four".