| Base | Representation |
|---|---|
| bin | 11011100100000… |
| … | …10101011110000 |
| 3 | 121010002021221210 |
| 4 | 31302002223300 |
| 5 | 433143101000 |
| 6 | 34535520120 |
| 7 | 5505232422 |
| oct | 1562025360 |
| 9 | 533067853 |
| 10 | 231222000 |
| 11 | 109578569 |
| 12 | 65529040 |
| 13 | 38b99569 |
| 14 | 229cc812 |
| 15 | 15475350 |
| hex | dc82af0 |
231222000 has 160 divisors (see below), whose sum is σ = 755576640. Its totient is φ = 60825600.
The previous prime is 231221983. The next prime is 231222011. The reversal of 231222000 is 222132.
231222000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×2312220002 = 106927226568000000, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (12).
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 31 ways as a sum of consecutive naturals, for example, 533784 + ... + 534216.
It is an arithmetic number, because the mean of its divisors is an integer number (4722354).
Almost surely, 2231222000 is an apocalyptic number.
231222000 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 231222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377788320).
231222000 is an abundant number, since it is smaller than the sum of its proper divisors (524354640).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
231222000 is a wasteful number, since it uses less digits than its factorization.
231222000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 548 (or 532 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 12.
The square root of 231222000 is about 15205.9856635471. The cubic root of 231222000 is about 613.7757388863.
Adding to 231222000 its reverse (222132), we get a palindrome (231444132).
The spelling of 231222000 in words is "two hundred thirty-one million, two hundred twenty-two thousand".
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