| Base | Representation |
|---|---|
| bin | 1110000111000111110011… |
| … | …00001011010001010011000 |
| 3 | 11001212112111211121002020120 |
| 4 | 13003203321201122022120 |
| 5 | 13031403022141443000 |
| 6 | 145555243002553240 |
| 7 | 6351626565143016 |
| oct | 703437141321230 |
| 9 | 131775454532216 |
| 10 | 31031030031000 |
| 11 | 998420552556a |
| 12 | 3592031208820 |
| 13 | 14412a12c317c |
| 14 | 793ca49658b6 |
| 15 | 38c2c57cd6a0 |
| hex | 1c38f985a298 |
31031030031000 has 256 divisors, whose sum is σ = 100575103749120. Its totient is φ = 7959405440000.
The previous prime is 31031030030993. The next prime is 31031030031007. The reversal of 31031030031000 is 13003013013.
It is an interprime number because it is at equal distance from previous prime (31031030030993) and next prime (31031030031007).
It is a super-2 number, since 2×310310300310002 (a number of 28 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31031030031007) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6956347 + ... + 10509653.
It is an arithmetic number, because the mean of its divisors is an integer number (392871499020).
Almost surely, 231031030031000 is an apocalyptic number.
31031030031000 is a gapful number since it is divisible by the number (30) 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 31031030031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50287551874560).
31031030031000 is an abundant number, since it is smaller than the sum of its proper divisors (69544073718120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31031030031000 is a wasteful number, since it uses less digits than its factorization.
31031030031000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3553443 (or 3553429 counting only the distinct ones).
The product of its (nonzero) digits is 81, while the sum is 15.
Adding to 31031030031000 its reverse (13003013013), we get a palindrome (31044033044013).
The spelling of 31031030031000 in words is "thirty-one trillion, thirty-one billion, thirty million, thirty-one thousand".
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