Base | Representation |
---|---|
bin | 1111101001000… |
… | …01101111111001 |
3 | 100010220011121021 |
4 | 13310201233321 |
5 | 232042211413 |
6 | 21004142441 |
7 | 3152161060 |
oct | 764415771 |
9 | 303804537 |
10 | 131210233 |
11 | 68079210 |
12 | 37b37a21 |
13 | 212505bb |
14 | 135d71d7 |
15 | b7bc18d |
hex | 7d21bf9 |
131210233 has 16 divisors (see below), whose sum is σ = 173211264. Its totient is φ = 96226560.
The previous prime is 131210221. The next prime is 131210237. The reversal of 131210233 is 332012131.
It is a cyclic number.
It is not a de Polignac number, because 131210233 - 213 = 131202041 is a prime.
It is a super-2 number, since 2×1312102332 = 34432250487828578, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (131210237) 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, 48810 + ... + 51427.
It is an arithmetic number, because the mean of its divisors is an integer number (10825704).
Almost surely, 2131210233 is an apocalyptic number.
It is an amenable number.
131210233 is a deficient number, since it is larger than the sum of its proper divisors (42001031).
131210233 is a wasteful number, since it uses less digits than its factorization.
131210233 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 100272.
The product of its (nonzero) digits is 108, while the sum is 16.
The square root of 131210233 is about 11454.7035317375. The cubic root of 131210233 is about 508.1468474655.
Adding to 131210233 its reverse (332012131), we get a palindrome (463222364).
The spelling of 131210233 in words is "one hundred thirty-one million, two hundred ten thousand, two hundred thirty-three".
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