231052202440 has 64 divisors (see below), whose sum is σ = 534279240000. Its totient is φ = 89862167808.

The previous prime is 231052202383. The next prime is 231052202441. The reversal of 231052202440 is 44202250132.

231052202440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231052202441) by changing a digit.

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, 2166447 + ... + 2270593.

It is an arithmetic number, because the mean of its divisors is an integer number (8348113125).

Almost surely, 2^231052202440 is an apocalyptic number.

231052202440 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 231052202440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267139620000).

231052202440 is an abundant number, since it is smaller than the sum of its proper divisors (303227037560).

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

231052202440 is a wasteful number, since it uses less digits than its factorization.

231052202440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105694 (or 105690 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 231052202440 its reverse (44202250132), we get a palindrome (275254452572).

The spelling of 231052202440 in words is "two hundred thirty-one billion, fifty-two million, two hundred two thousand, four hundred forty".