Base | Representation |
---|---|
bin | 11011100010100… |
… | …01010111100000 |
3 | 121002201000212022 |
4 | 31301101113200 |
5 | 433120120000 |
6 | 34531321012 |
7 | 5503431461 |
oct | 1561212740 |
9 | 532630768 |
10 | 231020000 |
11 | 10944a822 |
12 | 65450168 |
13 | 38b28633 |
14 | 22978d68 |
15 | 15435585 |
hex | dc515e0 |
231020000 has 60 divisors (see below), whose sum is σ = 568393056. Its totient is φ = 92400000.
The previous prime is 231019991. The next prime is 231020047. The reversal of 231020000 is 20132.
It is a Harshad number since it is a multiple of its sum of digits (8).
It is a self number, because there is not a number n which added to its sum of digits gives 231020000.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14225 + ... + 25775.
Almost surely, 2231020000 is an apocalyptic number.
231020000 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 231020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284196528).
231020000 is an abundant number, since it is smaller than the sum of its proper divisors (337373056).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
231020000 is an equidigital number, since it uses as much as digits as its factorization.
231020000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11581 (or 11558 counting only the distinct ones).
The product of its (nonzero) digits is 12, while the sum is 8.
The square root of 231020000 is about 15199.3420910249. The cubic root of 231020000 is about 613.5969513699.
Adding to 231020000 its reverse (20132), we get a palindrome (231040132).
The spelling of 231020000 in words is "two hundred thirty-one million, twenty thousand".
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