Base | Representation |
---|---|
bin | 11011111101111111… |
… | …101001001011000101 |
3 | 2212111220212010022001 |
4 | 123331333221023011 |
5 | 443000431420031 |
6 | 21443543105301 |
7 | 2112125222605 |
oct | 337577511305 |
9 | 85456763261 |
10 | 30031123141 |
11 | 11810871338 |
12 | 59a1442231 |
13 | 2aa7971366 |
14 | 164c62ac05 |
15 | bab725861 |
hex | 6fdfe92c5 |
30031123141 has 2 divisors, whose sum is σ = 30031123142. Its totient is φ = 30031123140.
The previous prime is 30031123091. The next prime is 30031123183. The reversal of 30031123141 is 14132113003.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 25036732900 + 4994390241 = 158230^2 + 70671^2 .
It is a cyclic number.
It is not a de Polignac number, because 30031123141 - 27 = 30031123013 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30031124141) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15015561570 + 15015561571.
It is an arithmetic number, because the mean of its divisors is an integer number (15015561571).
Almost surely, 230031123141 is an apocalyptic number.
It is an amenable number.
30031123141 is a deficient number, since it is larger than the sum of its proper divisors (1).
30031123141 is an equidigital number, since it uses as much as digits as its factorization.
30031123141 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 216, while the sum is 19.
Adding to 30031123141 its reverse (14132113003), we get a palindrome (44163236144).
The spelling of 30031123141 in words is "thirty billion, thirty-one million, one hundred twenty-three thousand, one hundred forty-one".
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