Base | Representation |
---|---|
bin | 11100001001110111… |
… | …001001011111101111 |
3 | 2220000210111102201122 |
4 | 130021313021133233 |
5 | 443402414112311 |
6 | 21515414331155 |
7 | 2120063440304 |
oct | 341167113757 |
9 | 86023442648 |
10 | 30230222831 |
11 | 11903199936 |
12 | 5a38059abb |
13 | 2b09ca1923 |
14 | 166ac570ab |
15 | bbde530db |
hex | 709dc97ef |
30230222831 has 2 divisors, whose sum is σ = 30230222832. Its totient is φ = 30230222830.
The previous prime is 30230222809. The next prime is 30230222861. The reversal of 30230222831 is 13822203203.
It is a weak prime.
It is an emirp because it is prime and its reverse (13822203203) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30230222831 - 218 = 30229960687 is a prime.
It is a super-2 number, since 2×302302228312 (a number of 22 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 30230222831.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30230222861) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15115111415 + 15115111416.
It is an arithmetic number, because the mean of its divisors is an integer number (15115111416).
Almost surely, 230230222831 is an apocalyptic number.
30230222831 is a deficient number, since it is larger than the sum of its proper divisors (1).
30230222831 is an equidigital number, since it uses as much as digits as its factorization.
30230222831 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3456, while the sum is 26.
The spelling of 30230222831 in words is "thirty billion, two hundred thirty million, two hundred twenty-two thousand, eight hundred thirty-one".
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