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31222444041 = 3223186780789
BaseRepresentation
bin11101000101000000…
…001011000000001001
32222120221112111100100
4131011000023000021
51002420421202131
622202101200013
72153502252435
oct350500130011
988527474310
1031222444041
111227228a368
126074400009
132c37717279
14172293b9c5
15c2b0e97e6
hex74500b009

31222444041 has 24 divisors (see below), whose sum is σ = 47085704640. Its totient is φ = 19899053856.

The previous prime is 31222444039. The next prime is 31222444061. The reversal of 31222444041 is 14044422213.

31222444041 is a `hidden beast` number, since 3 + 12 + 2 + 244 + 404 + 1 = 666.

It is not a de Polignac number, because 31222444041 - 21 = 31222444039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31222443996 and 31222444014.

It is not an unprimeable number, because it can be changed into a prime (31222444061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346075 + ... + 426863.

It is an arithmetic number, because the mean of its divisors is an integer number (1961904360).

Almost surely, 231222444041 is an apocalyptic number.

It is an amenable number.

31222444041 is a deficient number, since it is larger than the sum of its proper divisors (15863260599).

31222444041 is a wasteful number, since it uses less digits than its factorization.

31222444041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82685 (or 82682 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 31222444041 its reverse (14044422213), we get a palindrome (45266866254).

The spelling of 31222444041 in words is "thirty-one billion, two hundred twenty-two million, four hundred forty-four thousand, forty-one".

Divisors: 1 3 9 23 69 207 1867 5601 16803 42941 80789 128823 242367 386469 727101 1858147 5574441 16723323 150833063 452499189 1357497567 3469160449 10407481347 31222444041