Base | Representation |
---|---|
bin | 11011100101101… |
… | …00101111001011 |
3 | 121010110201012002 |
4 | 31302310233023 |
5 | 433221131034 |
6 | 34544141215 |
7 | 5510045225 |
oct | 1562645713 |
9 | 533421162 |
10 | 231427019 |
11 | 1096a85aa |
12 | 6560780b |
13 | 38c3b985 |
14 | 22a43415 |
15 | 154b5e7e |
hex | dcb4bcb |
231427019 has 2 divisors, whose sum is σ = 231427020. Its totient is φ = 231427018.
The previous prime is 231427003. The next prime is 231427033. The reversal of 231427019 is 910724132.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 231427019 - 24 = 231427003 is a prime.
It is a super-2 number, since 2×2314270192 = 107116930246452722, which contains 22 as substring.
It is a Sophie Germain prime.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 231426982 and 231427000.
It is not a weakly prime, because it can be changed into another prime (231427099) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115713509 + 115713510.
It is an arithmetic number, because the mean of its divisors is an integer number (115713510).
Almost surely, 2231427019 is an apocalyptic number.
231427019 is a deficient number, since it is larger than the sum of its proper divisors (1).
231427019 is an equidigital number, since it uses as much as digits as its factorization.
231427019 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 3024, while the sum is 29.
The square root of 231427019 is about 15212.7255611873. The cubic root of 231427019 is about 613.9570920370.
The spelling of 231427019 in words is "two hundred thirty-one million, four hundred twenty-seven thousand, nineteen".
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