231303440424 has 96 divisors (see below), whose sum is σ = 694367251200. Its totient is φ = 63954858240.

The previous prime is 231303440399. The next prime is 231303440471. The reversal of 231303440424 is 424044303132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 231303440391 and 231303440400.

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 23 ways as a sum of consecutive naturals, for example, 3135909 + ... + 3208820.

It is an arithmetic number, because the mean of its divisors is an integer number (7232992200).

Almost surely, 2^231303440424 is an apocalyptic number.

231303440424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231303440424 is an abundant number, since it is smaller than the sum of its proper divisors (463063810776).

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

231303440424 is a wasteful number, since it uses less digits than its factorization.

231303440424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6344783 (or 6344772 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 231303440424 its reverse (424044303132), we get a palindrome (655347743556).

The spelling of 231303440424 in words is "two hundred thirty-one billion, three hundred three million, four hundred forty thousand, four hundred twenty-four".