231225544 has 16 divisors (see below), whose sum is σ = 472961520. Its totient is φ = 105102480.

The previous prime is 231225539. The next prime is 231225587. The reversal of 231225544 is 445522132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1313694 + ... + 1313869.

It is an arithmetic number, because the mean of its divisors is an integer number (29560095).

Almost surely, 2^231225544 is an apocalyptic number.

It is an amenable number.

231225544 is an abundant number, since it is smaller than the sum of its proper divisors (241735976).

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

231225544 is a wasteful number, since it uses less digits than its factorization.

231225544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627580 (or 2627576 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 231225544 is about 15206.1021961580. The cubic root of 231225544 is about 613.7788747039.

Adding to 231225544 its reverse (445522132), we get a palindrome (676747676).

The spelling of 231225544 in words is "two hundred thirty-one million, two hundred twenty-five thousand, five hundred forty-four".