231224140720 has 40 divisors (see below), whose sum is σ = 537663065040. Its totient is φ = 92478140160.

The previous prime is 231224140691. The next prime is 231224140801. The reversal of 231224140720 is 27041422132.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 481690 + ... + 833350.

It is an arithmetic number, because the mean of its divisors is an integer number (13441576626).

Almost surely, 2^231224140720 is an apocalyptic number.

231224140720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231224140720 is an abundant number, since it is smaller than the sum of its proper divisors (306438924320).

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

231224140720 is a wasteful number, since it uses less digits than its factorization.

231224140720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359893 (or 359887 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 231224140720 its reverse (27041422132), we get a palindrome (258265562852).

The spelling of 231224140720 in words is "two hundred thirty-one billion, two hundred twenty-four million, one hundred forty thousand, seven hundred twenty".