| Base | Representation |
|---|---|
| bin | 111100001011… |
| … | …0101010100000 |
| 3 | 2012100220121200 |
| 4 | 1320112222200 |
| 5 | 31034100422 |
| 6 | 3044121200 |
| 7 | 532112556 |
| oct | 170265240 |
| 9 | 65326550 |
| 10 | 31550112 |
| 11 | 1689a080 |
| 12 | a696200 |
| 13 | 66c8709 |
| 14 | 4293bd6 |
| 15 | 2b832ac |
| hex | 1e16aa0 |
31550112 has 144 divisors (see below), whose sum is σ = 102368448. Its totient is φ = 9123840.
The previous prime is 31550111. The next prime is 31550119. The reversal of 31550112 is 21105513.
31550112 is a `hidden beast` number, since 3 + 1 + 550 + 112 = 666.
It is a tau number, because it is divible by the number of its divisors (144).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is not an unprimeable number, because it can be changed into a prime (31550111) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72648 + ... + 73080.
It is an arithmetic number, because the mean of its divisors is an integer number (710892).
Almost surely, 231550112 is an apocalyptic number.
31550112 is a gapful number since it is divisible by the number (32) 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 31550112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51184224).
31550112 is an abundant number, since it is smaller than the sum of its proper divisors (70818336).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31550112 is a wasteful number, since it uses less digits than its factorization.
31550112 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 483 (or 472 counting only the distinct ones).
The product of its (nonzero) digits is 150, while the sum is 18.
The square root of 31550112 is about 5616.9486378282. The cubic root of 31550112 is about 315.9853649153.
Adding to 31550112 its reverse (21105513), we get a palindrome (52655625).
It can be divided in two parts, 315501 and 12, that added together give a palindrome (315513).
The spelling of 31550112 in words is "thirty-one million, five hundred fifty thousand, one hundred twelve".
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