Base | Representation |
---|---|
bin | 1001010110010100011… |
… | …01100011010101010011 |
3 | 1010201010101100022212201 |
4 | 10223022031203111103 |
5 | 20230324323131011 |
6 | 403322210104031 |
7 | 32131064025055 |
oct | 4531215432523 |
9 | 1121111308781 |
10 | 321220130131 |
11 | 11425743112a |
12 | 52307b7b017 |
13 | 243a2228424 |
14 | 117934b78d5 |
15 | 85505decc1 |
hex | 4aca363553 |
321220130131 has 4 divisors (see below), whose sum is σ = 322140532000. Its totient is φ = 320299728264.
The previous prime is 321220130129. The next prime is 321220130149. The reversal of 321220130131 is 131031022123.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 321220130131 - 21 = 321220130129 is a prime.
It is a super-2 number, since 2×3212201301312 (a number of 24 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 321220130099 and 321220130108.
It is not an unprimeable number, because it can be changed into a prime (321220190131) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460200411 + ... + 460201108.
It is an arithmetic number, because the mean of its divisors is an integer number (80535133000).
Almost surely, 2321220130131 is an apocalyptic number.
321220130131 is a deficient number, since it is larger than the sum of its proper divisors (920401869).
321220130131 is an equidigital number, since it uses as much as digits as its factorization.
321220130131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 920401868.
The product of its (nonzero) digits is 216, while the sum is 19.
Adding to 321220130131 its reverse (131031022123), we get a palindrome (452251152254).
The spelling of 321220130131 in words is "three hundred twenty-one billion, two hundred twenty million, one hundred thirty thousand, one hundred thirty-one".
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