Base | Representation |
---|---|
bin | 111001100000… |
… | …0111100011111 |
3 | 2002201210121122 |
4 | 1303000330133 |
5 | 30204303211 |
6 | 2554121155 |
7 | 514163063 |
oct | 163007437 |
9 | 62653548 |
10 | 30150431 |
11 | 16023513 |
12 | a1201bb |
13 | 63285bc |
14 | 400baa3 |
15 | 29a86db |
hex | 1cc0f1f |
30150431 has 2 divisors, whose sum is σ = 30150432. Its totient is φ = 30150430.
The previous prime is 30150391. The next prime is 30150443. The reversal of 30150431 is 13405103.
It is a strong prime.
It is an emirp because it is prime and its reverse (13405103) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30150431 is a prime.
It is a super-2 number, since 2×301504312 = 1818096978971522, which contains 22 as substring.
It is a Chen prime.
It is a zygodrome in base 2.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30150451) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15075215 + 15075216.
It is an arithmetic number, because the mean of its divisors is an integer number (15075216).
Almost surely, 230150431 is an apocalyptic number.
30150431 is a deficient number, since it is larger than the sum of its proper divisors (1).
30150431 is an equidigital number, since it uses as much as digits as its factorization.
30150431 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 180, while the sum is 17.
The square root of 30150431 is about 5490.9408119192. The cubic root of 30150431 is about 311.2417450217.
Adding to 30150431 its reverse (13405103), we get a palindrome (43555534).
The spelling of 30150431 in words is "thirty million, one hundred fifty thousand, four hundred thirty-one".
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