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30012110123 = 65945541897
BaseRepresentation
bin11011111100110111…
…000111010100101011
32212110121002011100012
4123330313013110223
5442431100010443
621442023402135
72111504504222
oct337467072453
985417064305
1030012110123
11118010655a6
125996bb334b
132aa3a45258
141649cbbcb9
15ba9c1c118
hex6fcdc752b

30012110123 has 4 divisors (see below), whose sum is σ = 30057652680. Its totient is φ = 29966567568.

The previous prime is 30012110101. The next prime is 30012110159. The reversal of 30012110123 is 32101121003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30012110123 - 220 = 30011061547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30012110098 and 30012110107.

It is not an unprimeable number, because it can be changed into a prime (30012115123) 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, 22770290 + ... + 22771607.

It is an arithmetic number, because the mean of its divisors is an integer number (7514413170).

Almost surely, 230012110123 is an apocalyptic number.

30012110123 is a deficient number, since it is larger than the sum of its proper divisors (45542557).

30012110123 is an equidigital number, since it uses as much as digits as its factorization.

30012110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45542556.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 30012110123 its reverse (32101121003), we get a palindrome (62113231126).

The spelling of 30012110123 in words is "thirty billion, twelve million, one hundred ten thousand, one hundred twenty-three".

Divisors: 1 659 45541897 30012110123