231241043040 has 576 divisors, whose sum is σ = 891596922048. Its totient is φ = 50164531200.

The previous prime is 231241042979. The next prime is 231241043051. The reversal of 231241043040 is 40340142132.

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 231241043040.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 35676600 + ... + 35683080.

It is an arithmetic number, because the mean of its divisors is an integer number (1547911323).

Almost surely, 2^231241043040 is an apocalyptic number.

231241043040 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 231241043040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445798461024).

231241043040 is an abundant number, since it is smaller than the sum of its proper divisors (660355879008).

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

231241043040 is a wasteful number, since it uses less digits than its factorization.

231241043040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6591 (or 6576 counting only the distinct ones).

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

Adding to 231241043040 its reverse (40340142132), we get a palindrome (271581185172).

The spelling of 231241043040 in words is "two hundred thirty-one billion, two hundred forty-one million, forty-three thousand, forty".