231043313040 has 160 divisors (see below), whose sum is σ = 762751645056. Its totient is φ = 57651978240.

The previous prime is 231043312987. The next prime is 231043313041. The reversal of 231043313040 is 40313340132.

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 231043313040.

It is not an unprimeable number, because it can be changed into a prime (231043313041) 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 31 ways as a sum of consecutive naturals, for example, 542175 + ... + 869505.

Almost surely, 2^231043313040 is an apocalyptic number.

231043313040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231043313040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381375822528).

231043313040 is an abundant number, since it is smaller than the sum of its proper divisors (531708332016).

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

231043313040 is a wasteful number, since it uses less digits than its factorization.

231043313040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327537 (or 327531 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 231043313040 its reverse (40313340132), we get a palindrome (271356653172).

The spelling of 231043313040 in words is "two hundred thirty-one billion, forty-three million, three hundred thirteen thousand, forty".