Base | Representation |
---|---|
bin | 111101000110001000… |
… | …0110011000000000001 |
3 | 110112122201010222022211 |
4 | 1322030100303000001 |
5 | 4122200232413241 |
6 | 140135023102121 |
7 | 12323212400566 |
oct | 1721420630001 |
9 | 415581128284 |
10 | 131202232321 |
11 | 50708270066 |
12 | 21517441941 |
13 | c4abc9b0c4 |
14 | 64c901a86d |
15 | 362d690781 |
hex | 1e8c433001 |
131202232321 has 4 divisors (see below), whose sum is σ = 132782982192. Its totient is φ = 129621482452.
The previous prime is 131202232289. The next prime is 131202232349. The reversal of 131202232321 is 123232202131.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123232202131 = 32797 ⋅3757423.
It is a cyclic number.
It is not a de Polignac number, because 131202232321 - 25 = 131202232289 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 131202232292 and 131202232301.
It is not an unprimeable number, because it can be changed into a prime (131202232391) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790374811 + ... + 790374976.
It is an arithmetic number, because the mean of its divisors is an integer number (33195745548).
Almost surely, 2131202232321 is an apocalyptic number.
It is an amenable number.
131202232321 is a deficient number, since it is larger than the sum of its proper divisors (1580749871).
131202232321 is an equidigital number, since it uses as much as digits as its factorization.
131202232321 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1580749870.
The product of its (nonzero) digits is 864, while the sum is 22.
Adding to 131202232321 its reverse (123232202131), we get a palindrome (254434434452).
The spelling of 131202232321 in words is "one hundred thirty-one billion, two hundred two million, two hundred thirty-two thousand, three hundred twenty-one".
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