Base | Representation |
---|---|
bin | 11100001111111001… |
… | …010101010101001001 |
3 | 2220021211222202111021 |
4 | 130033321111111021 |
5 | 444104323141024 |
6 | 21533432232441 |
7 | 2122433101204 |
oct | 341771252511 |
9 | 86254882437 |
10 | 30331458889 |
11 | 11955354aa6 |
12 | 5a65b3b721 |
13 | 2b24c58c14 |
14 | 167a48a93b |
15 | bc7c9dde4 |
hex | 70fe55549 |
30331458889 has 4 divisors (see below), whose sum is σ = 30500908560. Its totient is φ = 30162009220.
The previous prime is 30331458851. The next prime is 30331458893. The reversal of 30331458889 is 98885413303.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 30331458889 - 27 = 30331458761 is a prime.
It is a super-2 number, since 2×303314588892 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30331450889) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84724567 + ... + 84724924.
It is an arithmetic number, because the mean of its divisors is an integer number (7625227140).
Almost surely, 230331458889 is an apocalyptic number.
It is an amenable number.
30331458889 is a deficient number, since it is larger than the sum of its proper divisors (169449671).
30331458889 is a wasteful number, since it uses less digits than its factorization.
30331458889 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 169449670.
The product of its (nonzero) digits is 2488320, while the sum is 52.
The spelling of 30331458889 in words is "thirty billion, three hundred thirty-one million, four hundred fifty-eight thousand, eight hundred eighty-nine".
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