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30030683873 = 61492306293
BaseRepresentation
bin11011111101111101…
…111101111011100001
32212111220000210201212
4123331331331323201
5443000323340443
621443525435505
72112121413131
oct337575757341
985456023655
1030030683873
11118105a1303
1259a126bb95
132aa7849438
14164c554ac1
15bab68a618
hex6fdf7dee1

30030683873 has 4 divisors (see below), whose sum is σ = 30522990228. Its totient is φ = 29538377520.

The previous prime is 30030683869. The next prime is 30030683897. The reversal of 30030683873 is 37838603003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37838603003 = 190591198533.

It can be written as a sum of positive squares in 2 ways, for example, as 9188564449 + 20842119424 = 95857^2 + 144368^2 .

It is a cyclic number.

It is not a de Polignac number, because 30030683873 - 22 = 30030683869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30030683873.

It is not an unprimeable number, because it can be changed into a prime (30030623873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246153086 + ... + 246153207.

It is an arithmetic number, because the mean of its divisors is an integer number (7630747557).

Almost surely, 230030683873 is an apocalyptic number.

It is an amenable number.

30030683873 is a deficient number, since it is larger than the sum of its proper divisors (492306355).

30030683873 is an equidigital number, since it uses as much as digits as its factorization.

30030683873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492306354.

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 30030683873 in words is "thirty billion, thirty million, six hundred eighty-three thousand, eight hundred seventy-three".

Divisors: 1 61 492306293 30030683873