231024520400 has 60 divisors (see below), whose sum is σ = 568573924044. Its totient is φ = 90155904000.

The previous prime is 231024520381. The next prime is 231024520403. The reversal of 231024520400 is 4025420132.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 67556327056 + 163468193344 = 259916^2 + 404312^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231024520403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7027031 + ... + 7059830.

Almost surely, 2^231024520400 is an apocalyptic number.

231024520400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231024520400 is an abundant number, since it is smaller than the sum of its proper divisors (337549403644).

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

231024520400 is a wasteful number, since it uses less digits than its factorization.

231024520400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14086920 (or 14086909 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 231024520400 its reverse (4025420132), we get a palindrome (235049940532).

The spelling of 231024520400 in words is "two hundred thirty-one billion, twenty-four million, five hundred twenty thousand, four hundred".