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30122103113 = 77417389089
BaseRepresentation
bin11100000011011010…
…101101000101001001
32212202021001101100122
4130003122231011021
5443142224244423
621500553113025
72114311436414
oct340332550511
985667041318
1030122103113
11118581619a3
125a079b8775
132ac077736b
14165a750b7b
15bb46e78c8
hex7036ad149

30122103113 has 4 divisors (see below), whose sum is σ = 30122569620. Its totient is φ = 30121636608.

The previous prime is 30122103103. The next prime is 30122103149. The reversal of 30122103113 is 31130122103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31130122103 = 115127046153.

It can be written as a sum of positive squares in 2 ways, for example, as 13645043344 + 16477059769 = 116812^2 + 128363^2 .

It is a cyclic number.

It is not a de Polignac number, because 30122103113 - 24 = 30122103097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30122103091 and 30122103100.

It is not an unprimeable number, because it can be changed into a prime (30122103103) 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, 117128 + ... + 271961.

It is an arithmetic number, because the mean of its divisors is an integer number (7530642405).

Almost surely, 230122103113 is an apocalyptic number.

It is an amenable number.

30122103113 is a deficient number, since it is larger than the sum of its proper divisors (466507).

30122103113 is an equidigital number, since it uses as much as digits as its factorization.

30122103113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466506.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30122103113 its reverse (31130122103), we get a palindrome (61252225216).

The spelling of 30122103113 in words is "thirty billion, one hundred twenty-two million, one hundred three thousand, one hundred thirteen".

Divisors: 1 77417 389089 30122103113