Base | Representation |
---|---|
bin | 111001011010… |
… | …1101101101111 |
3 | 2002122110111221 |
4 | 1302311231233 |
5 | 30201320211 |
6 | 2553124211 |
7 | 513612010 |
oct | 162655557 |
9 | 62573457 |
10 | 30104431 |
11 | 15aa19a5 |
12 | a0b9667 |
13 | 6310696 |
14 | 3dd9007 |
15 | 2999c71 |
hex | 1cb5b6f |
30104431 has 4 divisors (see below), whose sum is σ = 34405072. Its totient is φ = 25803792.
The previous prime is 30104423. The next prime is 30104449. The reversal of 30104431 is 13440103.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13440103 = 73 ⋅184111.
It is not a de Polignac number, because 30104431 - 23 = 30104423 is a prime.
It is a super-2 number, since 2×301044312 = 1812553531667522, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30104411) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2150310 + ... + 2150323.
It is an arithmetic number, because the mean of its divisors is an integer number (8601268).
Almost surely, 230104431 is an apocalyptic number.
30104431 is a deficient number, since it is larger than the sum of its proper divisors (4300641).
30104431 is an equidigital number, since it uses as much as digits as its factorization.
30104431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4300640.
The product of its (nonzero) digits is 144, while the sum is 16.
The square root of 30104431 is about 5486.7504955119. The cubic root of 30104431 is about 311.0833790426.
Adding to 30104431 its reverse (13440103), we get a palindrome (43544534).
The spelling of 30104431 in words is "thirty million, one hundred four thousand, four hundred thirty-one".
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