Base | Representation |
---|---|
bin | 11011011100100… |
… | …11011101010011 |
3 | 121001020111211100 |
4 | 31232103131103 |
5 | 432420222011 |
6 | 34502515443 |
7 | 5464011600 |
oct | 1556233523 |
9 | 531214740 |
10 | 230242131 |
11 | 108a69359 |
12 | 65135b83 |
13 | 38915562 |
14 | 228156a7 |
15 | 1532ed56 |
hex | db93753 |
230242131 has 36 divisors (see below), whose sum is σ = 393471000. Its totient is φ = 129322368.
The previous prime is 230242109. The next prime is 230242141. The reversal of 230242131 is 131242032.
It is not a de Polignac number, because 230242131 - 25 = 230242099 is a prime.
It is a super-2 number, since 2×2302421312 = 106022877774842322, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (230242141) 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 35 ways as a sum of consecutive naturals, for example, 21595 + ... + 30443.
It is an arithmetic number, because the mean of its divisors is an integer number (10929750).
Almost surely, 2230242131 is an apocalyptic number.
230242131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
230242131 is a deficient number, since it is larger than the sum of its proper divisors (163228869).
230242131 is a wasteful number, since it uses less digits than its factorization.
230242131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8928 (or 8918 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
The square root of 230242131 is about 15173.7316109123. The cubic root of 230242131 is about 612.9074948209.
Adding to 230242131 its reverse (131242032), we get a palindrome (361484163).
Subtracting from 230242131 its reverse (131242032), we obtain a palindrome (99000099).
The spelling of 230242131 in words is "two hundred thirty million, two hundred forty-two thousand, one hundred thirty-one".
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