Base | Representation |
---|---|
bin | 111001010001… |
… | …1100110010111 |
3 | 2002111200201210 |
4 | 1302203212113 |
5 | 30141431411 |
6 | 2551352503 |
7 | 513152460 |
oct | 162434627 |
9 | 62450653 |
10 | 30030231 |
11 | 15a51180 |
12 | a082733 |
13 | 62b598a |
14 | 3db9d67 |
15 | 2982ca6 |
hex | 1ca3997 |
30030231 has 32 divisors (see below), whose sum is σ = 50651136. Its totient is φ = 15372000.
The previous prime is 30030181. The next prime is 30030269. The reversal of 30030231 is 13203003.
It is a happy number.
It is not a de Polignac number, because 30030231 - 29 = 30029719 is a prime.
It is a super-2 number, since 2×300302312 = 1803629547826722, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30030031) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15486 + ... + 17316.
It is an arithmetic number, because the mean of its divisors is an integer number (1582848).
Almost surely, 230030231 is an apocalyptic number.
30030231 is a deficient number, since it is larger than the sum of its proper divisors (20620905).
30030231 is a wasteful number, since it uses less digits than its factorization.
30030231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1923.
The product of its (nonzero) digits is 54, while the sum is 12.
The square root of 30030231 is about 5479.9845802703. The cubic root of 30030231 is about 310.8275874963.
Adding to 30030231 its reverse (13203003), we get a palindrome (43233234).
The spelling of 30030231 in words is "thirty million, thirty thousand, two hundred thirty-one".
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