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30302143241 = 31379659593
BaseRepresentation
bin11100001110001001…
…100000001100001001
32220012210211100222112
4130032021200030021
5444024322040431
621530504032105
72121625652636
oct341611401411
986183740875
1030302143241
111193a851797
125a58162635
132b1bb63596
14167661918d
15bc540cc2b
hex70e260309

30302143241 has 4 divisors (see below), whose sum is σ = 30311805972. Its totient is φ = 30292480512.

The previous prime is 30302143237. The next prime is 30302143253. The reversal of 30302143241 is 14234120303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14234120303 = 131094932331.

It can be written as a sum of positive squares in 2 ways, for example, as 17055054025 + 13247089216 = 130595^2 + 115096^2 .

It is a cyclic number.

It is not a de Polignac number, because 30302143241 - 22 = 30302143237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30302143211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4826660 + ... + 4832933.

It is an arithmetic number, because the mean of its divisors is an integer number (7577951493).

Almost surely, 230302143241 is an apocalyptic number.

It is an amenable number.

30302143241 is a deficient number, since it is larger than the sum of its proper divisors (9662731).

30302143241 is an equidigital number, since it uses as much as digits as its factorization.

30302143241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9662730.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 30302143241 its reverse (14234120303), we get a palindrome (44536263544).

The spelling of 30302143241 in words is "thirty billion, three hundred two million, one hundred forty-three thousand, two hundred forty-one".

Divisors: 1 3137 9659593 30302143241