Base | Representation |
---|---|
bin | 111001011000… |
… | …1111110101011 |
3 | 2002121200112021 |
4 | 1302301332223 |
5 | 30200323011 |
6 | 2552525311 |
7 | 513516262 |
oct | 162617653 |
9 | 62550467 |
10 | 30089131 |
11 | 15a91456 |
12 | a0b0837 |
13 | 6306727 |
14 | 3dd35d9 |
15 | 2995471 |
hex | 1cb1fab |
30089131 has 2 divisors, whose sum is σ = 30089132. Its totient is φ = 30089130.
The previous prime is 30089119. The next prime is 30089159. The reversal of 30089131 is 13198003.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30089131 is a prime.
It is a super-2 number, since 2×300891312 = 1810711608670322, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 30089096 and 30089105.
It is not a weakly prime, because it can be changed into another prime (30089831) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15044565 + 15044566.
It is an arithmetic number, because the mean of its divisors is an integer number (15044566).
Almost surely, 230089131 is an apocalyptic number.
30089131 is a deficient number, since it is larger than the sum of its proper divisors (1).
30089131 is an equidigital number, since it uses as much as digits as its factorization.
30089131 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 648, while the sum is 25.
The square root of 30089131 is about 5485.3560504310. The cubic root of 30089131 is about 311.0306693906.
The spelling of 30089131 in words is "thirty million, eighty-nine thousand, one hundred thirty-one".
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