100243131230440 has 64 divisors (see below), whose sum is σ = 246292786728000. Its totient is φ = 36416275184640.

The previous prime is 100243131230317. The next prime is 100243131230441. The reversal of 100243131230440 is 44032131342001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100243131230399 and 100243131230408.

It is not an unprimeable number, because it can be changed into a prime (100243131230441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111340305 + ... + 112237024.

It is an arithmetic number, because the mean of its divisors is an integer number (3848324792625).

Almost surely, 2^{100243131230440} is an apocalyptic number.

100243131230440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100243131230440 is an abundant number, since it is smaller than the sum of its proper divisors (146049655497560).

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

100243131230440 is a wasteful number, since it uses less digits than its factorization.

100243131230440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223578370 (or 223578366 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 100243131230440 its reverse (44032131342001), we get a palindrome (144275262572441).

The spelling of 100243131230440 in words is "one hundred trillion, two hundred forty-three billion, one hundred thirty-one million, two hundred thirty thousand, four hundred forty".