Base | Representation |
---|---|
bin | 111010010100… |
… | …0000111100111 |
3 | 2010112021022111 |
4 | 1310220013213 |
5 | 30311314111 |
6 | 3011141451 |
7 | 520603126 |
oct | 164500747 |
9 | 63467274 |
10 | 30573031 |
11 | 16291a75 |
12 | a2a4887 |
13 | 6445a68 |
14 | 40bbabd |
15 | 2a3da21 |
hex | 1d281e7 |
30573031 has 2 divisors, whose sum is σ = 30573032. Its totient is φ = 30573030.
The previous prime is 30573007. The next prime is 30573061. The reversal of 30573031 is 13037503.
It is a weak prime.
It is an emirp because it is prime and its reverse (13037503) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30573031 - 25 = 30572999 is a prime.
It is a super-2 number, since 2×305730312 = 1869420449053922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 30572993 and 30573011.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30573001) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15286515 + 15286516.
It is an arithmetic number, because the mean of its divisors is an integer number (15286516).
Almost surely, 230573031 is an apocalyptic number.
30573031 is a deficient number, since it is larger than the sum of its proper divisors (1).
30573031 is an equidigital number, since it uses as much as digits as its factorization.
30573031 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 945, while the sum is 22.
The square root of 30573031 is about 5529.2884714039. The cubic root of 30573031 is about 312.6891646172.
The spelling of 30573031 in words is "thirty million, five hundred seventy-three thousand, thirty-one".
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