231442325504 has 84 divisors (see below), whose sum is σ = 501202530486. Its totient is φ = 106818895872.

The previous prime is 231442325503. The next prime is 231442325537. The reversal of 231442325504 is 405523244132.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 53290799104 + 178151526400 = 230848^2 + 422080^2 .

It is not an unprimeable number, because it can be changed into a prime (231442325503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1300862 + ... + 1468034.

Almost surely, 2^231442325504 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 231442325504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250601265243).

231442325504 is an abundant number, since it is smaller than the sum of its proper divisors (269760204982).

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

231442325504 is an equidigital number, since it uses as much as digits as its factorization.

231442325504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167225 (or 167188 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 231442325504 its reverse (405523244132), we get a palindrome (636965569636).

The spelling of 231442325504 in words is "two hundred thirty-one billion, four hundred forty-two million, three hundred twenty-five thousand, five hundred four".