Base | Representation |
---|---|
bin | 11100001000010000… |
… | …001011100001111011 |
3 | 2212221220201001222102 |
4 | 130020100023201323 |
5 | 443324011332311 |
6 | 21513012014015 |
7 | 2116315136051 |
oct | 341020134173 |
9 | 85856631872 |
10 | 30203230331 |
11 | 11899a32a8a |
12 | 5a2b00130b |
13 | 2b04510831 |
14 | 166742c1d1 |
15 | bbb8c043b |
hex | 70840b87b |
30203230331 has 2 divisors, whose sum is σ = 30203230332. Its totient is φ = 30203230330.
The previous prime is 30203230283. The next prime is 30203230333. The reversal of 30203230331 is 13303230203.
It is a strong prime.
It is an emirp because it is prime and its reverse (13303230203) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30203230331 - 214 = 30203213947 is a prime.
It is a super-2 number, since 2×302032303312 (a number of 22 digits) contains 22 as substring.
Together with 30203230333, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (30203230333) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15101615165 + 15101615166.
It is an arithmetic number, because the mean of its divisors is an integer number (15101615166).
Almost surely, 230203230331 is an apocalyptic number.
30203230331 is a deficient number, since it is larger than the sum of its proper divisors (1).
30203230331 is an equidigital number, since it uses as much as digits as its factorization.
30203230331 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 972, while the sum is 20.
Adding to 30203230331 its reverse (13303230203), we get a palindrome (43506460534).
The spelling of 30203230331 in words is "thirty billion, two hundred three million, two hundred thirty thousand, three hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •