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30310005 = 3511183697
BaseRepresentation
bin111001110011…
…1111001110101
32010000220111210
41303213321311
530224410010
63001352033
7515426235
oct163477165
963026453
1030310005
11161223a0
12a198619
13638311b
14404dcc5
1529dab20
hex1ce7e75

30310005 has 16 divisors (see below), whose sum is σ = 52905024. Its totient is φ = 14695680.

The previous prime is 30310003. The next prime is 30310019. The reversal of 30310005 is 50001303.

It is a happy number.

It is not a de Polignac number, because 30310005 - 21 = 30310003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30310003) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 91684 + ... + 92013.

It is an arithmetic number, because the mean of its divisors is an integer number (3306564).

Almost surely, 230310005 is an apocalyptic number.

It is an amenable number.

30310005 is a deficient number, since it is larger than the sum of its proper divisors (22595019).

30310005 is a wasteful number, since it uses less digits than its factorization.

30310005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183716.

The product of its (nonzero) digits is 45, while the sum is 12.

The square root of 30310005 is about 5505.4522974956. The cubic root of 30310005 is about 311.7898712506.

Adding to 30310005 its reverse (50001303), we get a palindrome (80311308).

The spelling of 30310005 in words is "thirty million, three hundred ten thousand, five".

Divisors: 1 3 5 11 15 33 55 165 183697 551091 918485 2020667 2755455 6062001 10103335 30310005