231043421040 has 80 divisors (see below), whose sum is σ = 716407825536. Its totient is φ = 61596678400.

The previous prime is 231043421039. The next prime is 231043421099. The reversal of 231043421040 is 40124340132.

231043421040 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 231043421040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 896335 + ... + 1124945.

Almost surely, 2^231043421040 is an apocalyptic number.

231043421040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231043421040 is an abundant number, since it is smaller than the sum of its proper divisors (485364404496).

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

231043421040 is a wasteful number, since it uses less digits than its factorization.

231043421040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232838 (or 232832 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 231043421040 its reverse (40124340132), we get a palindrome (271167761172).

The spelling of 231043421040 in words is "two hundred thirty-one billion, forty-three million, four hundred twenty-one thousand, forty".