Base | Representation |
---|---|
bin | 11100001001110110… |
… | …011010110001010011 |
3 | 2220000210010201012012 |
4 | 130021312122301103 |
5 | 443402342001233 |
6 | 21515410253135 |
7 | 2120062012313 |
oct | 341166326123 |
9 | 86023121165 |
10 | 30230031443 |
11 | 11903079067 |
12 | 5a37b871ab |
13 | 2b09c35791 |
14 | 166ac07443 |
15 | bbde16548 |
hex | 709d9ac53 |
30230031443 has 4 divisors (see below), whose sum is σ = 30230418960. Its totient is φ = 30229643928.
The previous prime is 30230031427. The next prime is 30230031451. The reversal of 30230031443 is 34413003203.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 34413003203 = 991 ⋅34725533.
It is a cyclic number.
It is not a de Polignac number, because 30230031443 - 24 = 30230031427 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30230031493) 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, 31388 + ... + 247881.
It is an arithmetic number, because the mean of its divisors is an integer number (7557604740).
Almost surely, 230230031443 is an apocalyptic number.
30230031443 is a deficient number, since it is larger than the sum of its proper divisors (387517).
30230031443 is a wasteful number, since it uses less digits than its factorization.
30230031443 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 387516.
The product of its (nonzero) digits is 2592, while the sum is 23.
Adding to 30230031443 its reverse (34413003203), we get a palindrome (64643034646).
The spelling of 30230031443 in words is "thirty billion, two hundred thirty million, thirty-one thousand, four hundred forty-three".
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