| Base | Representation |
|---|---|
| bin | 11111000000101111011… |
| … | …101110101111110000000 |
| 3 | 21112201202000212112212220 |
| 4 | 133000233131311332000 |
| 5 | 234403443113144300 |
| 6 | 4311002555451040 |
| 7 | 306652435143015 |
| oct | 37005735657600 |
| 9 | 7481660775786 |
| 10 | 2131100131200 |
| 11 | 751881514857 |
| 12 | 2a5031156a80 |
| 13 | 125c673344c1 |
| 14 | 752080cd70c |
| 15 | 3a67c700da0 |
| hex | 1f02f775f80 |
2131100131200 has 384 divisors, whose sum is σ = 7394127043200. Its totient is φ = 537991372800.
The previous prime is 2131100131163. The next prime is 2131100131243. The reversal of 2131100131200 is 21310011312.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (384).
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a self number, because there is not a number n which added to its sum of digits gives 2131100131200.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 314271810 + ... + 314278590.
It is an arithmetic number, because the mean of its divisors is an integer number (19255539175).
Almost surely, 22131100131200 is an apocalyptic number.
2131100131200 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 2131100131200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3697063521600).
2131100131200 is an abundant number, since it is smaller than the sum of its proper divisors (5263026912000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2131100131200 is a wasteful number, since it uses less digits than its factorization.
2131100131200 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8550 (or 8533 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 15.
Adding to 2131100131200 its reverse (21310011312), we get a palindrome (2152410142512).
The spelling of 2131100131200 in words is "two trillion, one hundred thirty-one billion, one hundred million, one hundred thirty-one thousand, two hundred".
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