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30121331110 = 25132937215939
BaseRepresentation
bin11100000011010111…
…110000100110100110
32212202012121011100221
4130003113300212212
5443142030043420
621500524354554
72114302042603
oct340327604646
985665534327
1030121331110
1111857784982
125a076a5a5a
132ac0566b60
14165a5cd6aa
15bb45e3caa
hex7035f09a6

30121331110 has 64 divisors (see below), whose sum is σ = 62035243200. Its totient is φ = 10447944192.

The previous prime is 30121331063. The next prime is 30121331129. The reversal of 30121331110 is 1113312103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31521 + ... + 247459.

It is an arithmetic number, because the mean of its divisors is an integer number (969300675).

Almost surely, 230121331110 is an apocalyptic number.

30121331110 is an abundant number, since it is smaller than the sum of its proper divisors (31913912090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30121331110 is a wasteful number, since it uses less digits than its factorization.

30121331110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216025.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 30121331110 its reverse (1113312103), we get a palindrome (31234643213).

The spelling of 30121331110 in words is "thirty billion, one hundred twenty-one million, three hundred thirty-one thousand, one hundred ten".

Divisors: 1 2 5 10 13 26 29 37 58 65 74 130 145 185 290 370 377 481 754 962 1073 1885 2146 2405 3770 4810 5365 10730 13949 27898 69745 139490 215939 431878 1079695 2159390 2807207 5614414 6262231 7989743 12524462 14036035 15979486 28072070 31311155 39948715 62622310 79897430 81409003 103866659 162818006 207733318 231702547 407045015 463405094 519333295 814090030 1038666590 1158512735 2317025470 3012133111 6024266222 15060665555 30121331110