Base | Representation |
---|---|
bin | 11011100010011… |
… | …00110100001101 |
3 | 121002200002021211 |
4 | 31301030310031 |
5 | 433114020412 |
6 | 34531054421 |
7 | 5503323226 |
oct | 1561146415 |
9 | 532602254 |
10 | 231001357 |
11 | 109437814 |
12 | 65441411 |
13 | 38b1ccc2 |
14 | 2297224d |
15 | 1542eca7 |
hex | dc4cd0d |
231001357 has 2 divisors, whose sum is σ = 231001358. Its totient is φ = 231001356.
The previous prime is 231001319. The next prime is 231001363. The reversal of 231001357 is 753100132.
231001357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 157402116 + 73599241 = 12546^2 + 8579^2 .
It is a cyclic number.
It is not a de Polignac number, because 231001357 - 223 = 222612749 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (231001307) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115500678 + 115500679.
It is an arithmetic number, because the mean of its divisors is an integer number (115500679).
Almost surely, 2231001357 is an apocalyptic number.
It is an amenable number.
231001357 is a deficient number, since it is larger than the sum of its proper divisors (1).
231001357 is an equidigital number, since it uses as much as digits as its factorization.
231001357 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 630, while the sum is 22.
The square root of 231001357 is about 15198.7287955276. The cubic root of 231001357 is about 613.5804454459.
Adding to 231001357 its reverse (753100132), we get a palindrome (984101489).
The spelling of 231001357 in words is "two hundred thirty-one million, one thousand, three hundred fifty-seven".
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