100001231240 has 64 divisors (see below), whose sum is σ = 228170401200. Its totient is φ = 39437770752.

The previous prime is 100001231233. The next prime is 100001231249. The reversal of 100001231240 is 42132100001.

It can be written as a sum of positive squares in 8 ways, for example, as 65904131524 + 34097099716 = 256718^2 + 184654^2 .

It is not an unprimeable number, because it can be changed into a prime (100001231249) 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, 11071046 + ... + 11080074.

Almost surely, 2^100001231240 is an apocalyptic number.

100001231240 is a gapful number since it is divisible by the number (10) 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 100001231240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114085200600).

100001231240 is an abundant number, since it is smaller than the sum of its proper divisors (128169169960).

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

100001231240 is a wasteful number, since it uses less digits than its factorization.

100001231240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12906 (or 12902 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 100001231240 its reverse (42132100001), we get a palindrome (142133331241).

The spelling of 100001231240 in words is "one hundred billion, one million, two hundred thirty-one thousand, two hundred forty".