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30000123023 = 1317479283397
BaseRepresentation
bin11011111100001001…
…011000110010001111
32212102202112011010112
4123330021120302033
5442420012414043
621440514430235
72111300560343
oct337411306217
985382464115
1030000123023
11117a5318502
125992b9237b
132aa14090b0
14164847b623
15ba8b50518
hex6fc258c8f

30000123023 has 16 divisors (see below), whose sum is σ = 34279822080. Its totient is φ = 26008951296.

The previous prime is 30000123019. The next prime is 30000123061. The reversal of 30000123023 is 32032100003.

It is a cyclic number.

It is not a de Polignac number, because 30000123023 - 22 = 30000123019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30000122989 and 30000123007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000123523) 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 15 ways as a sum of consecutive naturals, for example, 35840 + ... + 247557.

It is an arithmetic number, because the mean of its divisors is an integer number (2142488880).

Almost surely, 230000123023 is an apocalyptic number.

30000123023 is a deficient number, since it is larger than the sum of its proper divisors (4279699057).

30000123023 is a wasteful number, since it uses less digits than its factorization.

30000123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283906.

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 30000123023 its reverse (32032100003), we get a palindrome (62032223026).

The spelling of 30000123023 in words is "thirty billion, one hundred twenty-three thousand, twenty-three".

Divisors: 1 13 17 221 479 6227 8143 105859 283397 3684161 4817749 62630737 135747163 1764713119 2307701771 30000123023