Base | Representation |
---|---|
bin | 11101000101011110… |
… | …000100101101000000 |
3 | 2222121111021201202212 |
4 | 131011132010231000 |
5 | 1002424423020220 |
6 | 22202541201252 |
7 | 2153626010321 |
oct | 350536045500 |
9 | 88544251685 |
10 | 31230282560 |
11 | 12276753584 |
12 | 6076b60228 |
13 | 2c39230049 |
14 | 17239bc448 |
15 | c2bb470c5 |
hex | 745784b40 |
31230282560 has 56 divisors (see below), whose sum is σ = 74812550400. Its totient is φ = 12417288704.
The previous prime is 31230282553. The next prime is 31230282593. The reversal of 31230282560 is 6528203213.
It is a Harshad number since it is a multiple of its sum of digits (32).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238760 + ... + 345639.
It is an arithmetic number, because the mean of its divisors is an integer number (1335938400).
Almost surely, 231230282560 is an apocalyptic number.
It is an amenable number.
31230282560 is an abundant number, since it is smaller than the sum of its proper divisors (43582267840).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31230282560 is a wasteful number, since it uses less digits than its factorization.
31230282560 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 584583 (or 584573 counting only the distinct ones).
The product of its (nonzero) digits is 17280, while the sum is 32.
Adding to 31230282560 its reverse (6528203213), we get a palindrome (37758485773).
The spelling of 31230282560 in words is "thirty-one billion, two hundred thirty million, two hundred eighty-two thousand, five hundred sixty".
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