Base | Representation |
---|---|
bin | 111010000111… |
… | …0111110000111 |
3 | 2010100001000101 |
4 | 1310032332013 |
5 | 30300020043 |
6 | 3005024531 |
7 | 516663613 |
oct | 164167607 |
9 | 63301011 |
10 | 30470023 |
11 | 16221641 |
12 | a255147 |
13 | 640abcc |
14 | 4092343 |
15 | 2a1d24d |
hex | 1d0ef87 |
30470023 has 2 divisors, whose sum is σ = 30470024. Its totient is φ = 30470022.
The previous prime is 30470021. The next prime is 30470131. The reversal of 30470023 is 32007403.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 30470023 - 21 = 30470021 is a prime.
Together with 30470021, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30470021) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15235011 + 15235012.
It is an arithmetic number, because the mean of its divisors is an integer number (15235012).
Almost surely, 230470023 is an apocalyptic number.
30470023 is a deficient number, since it is larger than the sum of its proper divisors (1).
30470023 is an equidigital number, since it uses as much as digits as its factorization.
30470023 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 504, while the sum is 19.
The square root of 30470023 is about 5519.9658513436. The cubic root of 30470023 is about 312.3375941191.
Adding to 30470023 its reverse (32007403), we get a palindrome (62477426).
The spelling of 30470023 in words is "thirty million, four hundred seventy thousand, twenty-three".
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