Base | Representation |
---|---|
bin | 111111111001011… |
… | …0100111000010111 |
3 | 12112102101000120002 |
4 | 1333302310320113 |
5 | 13342332431411 |
6 | 552430001515 |
7 | 104062646000 |
oct | 17762647027 |
9 | 5472330502 |
10 | 2144030231 |
11 | a00281712 |
12 | 4ba04629b |
13 | 282265c55 |
14 | 164a6c1a7 |
15 | c836333b |
hex | 7fcb4e17 |
2144030231 has 32 divisors (see below), whose sum is σ = 2582236800. Its totient is φ = 1778112000.
The previous prime is 2144030201. The next prime is 2144030237. The reversal of 2144030231 is 1320304412.
It is not a de Polignac number, because 2144030231 - 222 = 2139835927 is a prime.
It is a super-2 number, since 2×21440302312 = 9193731262883826722, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2144030237) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3058181 + ... + 3058881.
It is an arithmetic number, because the mean of its divisors is an integer number (80694900).
Almost surely, 22144030231 is an apocalyptic number.
2144030231 is a deficient number, since it is larger than the sum of its proper divisors (438206569).
2144030231 is an equidigital number, since it uses as much as digits as its factorization.
2144030231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1000 (or 986 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 20.
The square root of 2144030231 is about 46303.6740550898. The cubic root of 2144030231 is about 1289.4672060126.
Adding to 2144030231 its reverse (1320304412), we get a palindrome (3464334643).
The spelling of 2144030231 in words is "two billion, one hundred forty-four million, thirty thousand, two hundred thirty-one".
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