Base | Representation |
---|---|
bin | 11011100010110… |
… | …01111000010110 |
3 | 121002202210200210 |
4 | 31301121320112 |
5 | 433122223440 |
6 | 34532150250 |
7 | 5503635234 |
oct | 1561317026 |
9 | 532683623 |
10 | 231054870 |
11 | 109473a42 |
12 | 65468386 |
13 | 38b3b477 |
14 | 22987954 |
15 | 15440a80 |
hex | dc59e16 |
231054870 has 16 divisors (see below), whose sum is σ = 554531760. Its totient is φ = 61614624.
The previous prime is 231054869. The next prime is 231054911. The reversal of 231054870 is 78450132.
It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 7701829 = 231054870 / (2 + 3 + 1 + 0 + 5 + 4 + 8 + 7 + 0).
It is a Curzon number.
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, 3850885 + ... + 3850944.
It is an arithmetic number, because the mean of its divisors is an integer number (34658235).
Almost surely, 2231054870 is an apocalyptic number.
231054870 is an abundant number, since it is smaller than the sum of its proper divisors (323476890).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
231054870 is a wasteful number, since it uses less digits than its factorization.
231054870 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7701839.
The product of its (nonzero) digits is 6720, while the sum is 30.
The square root of 231054870 is about 15200.4891368666. The cubic root of 231054870 is about 613.6278217841.
The spelling of 231054870 in words is "two hundred thirty-one million, fifty-four thousand, eight hundred seventy".
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