Base | Representation |
---|---|
bin | 111001010100… |
… | …0100001111111 |
3 | 2002112201102221 |
4 | 1302220201333 |
5 | 30143103211 |
6 | 2552030211 |
7 | 513265405 |
oct | 162504177 |
9 | 62481387 |
10 | 30050431 |
11 | 15a65374 |
12 | a092367 |
13 | 62c1c28 |
14 | 3dc3475 |
15 | 2988c71 |
hex | 1ca887f |
30050431 has 2 divisors, whose sum is σ = 30050432. Its totient is φ = 30050430.
The previous prime is 30050413. The next prime is 30050459. The reversal of 30050431 is 13405003.
Together with previous prime (30050413) it forms an Ormiston pair, because they use the same digits, order apart.
It is a weak prime.
It is an emirp because it is prime and its reverse (13405003) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30050431 - 213 = 30042239 is a prime.
It is a super-2 number, since 2×300504312 = 1806056806571522, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30059431) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15025215 + 15025216.
It is an arithmetic number, because the mean of its divisors is an integer number (15025216).
Almost surely, 230050431 is an apocalyptic number.
30050431 is a deficient number, since it is larger than the sum of its proper divisors (1).
30050431 is an equidigital number, since it uses as much as digits as its factorization.
30050431 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 16.
The square root of 30050431 is about 5481.8273413160. The cubic root of 30050431 is about 310.8972651709.
Adding to 30050431 its reverse (13405003), we get a palindrome (43455434).
The spelling of 30050431 in words is "thirty million, fifty thousand, four hundred thirty-one".
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