Base | Representation |
---|---|
bin | 11011100011000… |
… | …00000011010101 |
3 | 121002211002101001 |
4 | 31301200003111 |
5 | 433124031044 |
6 | 34532503301 |
7 | 5504102026 |
oct | 1561400325 |
9 | 532732331 |
10 | 231080149 |
11 | 109490a33 |
12 | 6547ab31 |
13 | 38b49b21 |
14 | 22992c4d |
15 | 154482d4 |
hex | dc600d5 |
231080149 has 8 divisors (see below), whose sum is σ = 249442560. Its totient is φ = 213410736.
The previous prime is 231080131. The next prime is 231080173. The reversal of 231080149 is 941080132.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 231080149 - 25 = 231080117 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (231080189) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172557 + ... + 173890.
It is an arithmetic number, because the mean of its divisors is an integer number (31180320).
Almost surely, 2231080149 is an apocalyptic number.
231080149 is a gapful number since it is divisible by the number (29) formed by its first and last digit.
It is an amenable number.
231080149 is a deficient number, since it is larger than the sum of its proper divisors (18362411).
231080149 is a wasteful number, since it uses less digits than its factorization.
231080149 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 346499.
The product of its (nonzero) digits is 1728, while the sum is 28.
The square root of 231080149 is about 15201.3206334187. The cubic root of 231080149 is about 613.6501993432.
The spelling of 231080149 in words is "two hundred thirty-one million, eighty thousand, one hundred forty-nine".
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