Base | Representation |
---|---|
bin | 111001011101… |
… | …0000101011011 |
3 | 2002200101001220 |
4 | 1302322011123 |
5 | 30202403311 |
6 | 2553343123 |
7 | 514015131 |
oct | 162720533 |
9 | 62611056 |
10 | 30122331 |
11 | 16004398 |
12 | a107aa3 |
13 | 6318885 |
14 | 4001751 |
15 | 29a0206 |
hex | 1cba15b |
30122331 has 8 divisors (see below), whose sum is σ = 41142864. Its totient is φ = 19591680.
The previous prime is 30122321. The next prime is 30122333. The reversal of 30122331 is 13322103.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30122331 - 210 = 30121307 is a prime.
It is a super-2 number, since 2×301223312 = 1814709649747122, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 30122331.
It is not an unprimeable number, because it can be changed into a prime (30122333) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122326 + ... + 122571.
It is an arithmetic number, because the mean of its divisors is an integer number (5142858).
Almost surely, 230122331 is an apocalyptic number.
30122331 is a deficient number, since it is larger than the sum of its proper divisors (11020533).
30122331 is a wasteful number, since it uses less digits than its factorization.
30122331 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 244941.
The product of its (nonzero) digits is 108, while the sum is 15.
The square root of 30122331 is about 5488.3814554019. The cubic root of 30122331 is about 311.1450232260.
Adding to 30122331 its reverse (13322103), we get a palindrome (43444434).
The spelling of 30122331 in words is "thirty million, one hundred twenty-two thousand, three hundred thirty-one".
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