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30131302019 = 7213192489573
BaseRepresentation
bin11100000011111101…
…110010111010000011
32212202220100201212212
4130003331302322003
5443202103131034
621501522212335
72114452561400
oct340375627203
985686321785
1030131302019
11118623751a5
125a0aab40ab
132ac26483c0
14165ba672a7
15bb54132ce
hex703f72e83

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".

Divisors: 1 7 13 19 49 91 133 247 637 931 1729 12103 2489573 17427011 32364449 47301887 121989077 226551143 331113209 614924531 1585858001 2317792463 4304471717 30131302019