Base | Representation |
---|---|
bin | 11100000011111101… |
… | …110010111010000011 |
3 | 2212202220100201212212 |
4 | 130003331302322003 |
5 | 443202103131034 |
6 | 21501522212335 |
7 | 2114452561400 |
oct | 340375627203 |
9 | 85686321785 |
10 | 30131302019 |
11 | 118623751a5 |
12 | 5a0aab40ab |
13 | 2ac26483c0 |
14 | 165ba672a7 |
15 | bb54132ce |
hex | 703f72e83 |
30131302019 has 24 divisors (see below), whose sum is σ = 39733601040. Its totient is φ = 22585397184.
The previous prime is 30131302001. The next prime is 30131302021. The reversal of 30131302019 is 91020313103.
It is not a de Polignac number, because 30131302019 - 28 = 30131301763 is a prime.
It is a super-2 number, since 2×301313020192 (a number of 22 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 30131301985 and 30131302003.
It is not an unprimeable number, because it can be changed into a prime (30131302079) 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 23 ways as a sum of consecutive naturals, for example, 1232684 + ... + 1256889.
It is an arithmetic number, because the mean of its divisors is an integer number (1655566710).
Almost surely, 230131302019 is an apocalyptic number.
30131302019 is a deficient number, since it is larger than the sum of its proper divisors (9602299021).
30131302019 is a wasteful number, since it uses less digits than its factorization.
30131302019 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2489619 (or 2489612 counting only the distinct ones).
The product of its (nonzero) digits is 486, while the sum is 23.
The spelling of 30131302019 in words is "thirty billion, one hundred thirty-one million, three hundred two thousand, nineteen".
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