Base | Representation |
---|---|
bin | 11100010111000010… |
… | …010100100010010001 |
3 | 2220121012102001110121 |
4 | 130113002110202101 |
5 | 444331010133231 |
6 | 21553352030241 |
7 | 2125416254245 |
oct | 342702244221 |
9 | 86535361417 |
10 | 30451255441 |
11 | 11a06a37a12 |
12 | 5a9a092381 |
13 | 2b43a11359 |
14 | 168c352425 |
15 | bd3564311 |
hex | 717094891 |
30451255441 has 4 divisors (see below), whose sum is σ = 30457383732. Its totient is φ = 30445127152.
The previous prime is 30451255403. The next prime is 30451255463. The reversal of 30451255441 is 14455215403.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14455215403 = 23561 ⋅613523.
It can be written as a sum of positive squares in 2 ways, for example, as 23905798225 + 6545457216 = 154615^2 + 80904^2 .
It is a cyclic number.
It is not a de Polignac number, because 30451255441 - 213 = 30451247249 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 30451255397 and 30451255406.
It is not an unprimeable number, because it can be changed into a prime (30451252441) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3056686 + ... + 3066631.
It is an arithmetic number, because the mean of its divisors is an integer number (7614345933).
Almost surely, 230451255441 is an apocalyptic number.
It is an amenable number.
30451255441 is a deficient number, since it is larger than the sum of its proper divisors (6128291).
30451255441 is an equidigital number, since it uses as much as digits as its factorization.
30451255441 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6128290.
The product of its (nonzero) digits is 48000, while the sum is 34.
It can be divided in two parts, 304512 and 55441, that added together give a palindrome (359953).
The spelling of 30451255441 in words is "thirty billion, four hundred fifty-one million, two hundred fifty-five thousand, four hundred forty-one".
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