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31122310082 = 2199563138893
BaseRepresentation
bin11100111111000010…
…001100001111000010
32222022222010011101012
4130333002030033002
51002214302410312
622144123040522
72151145161623
oct347702141702
988288104335
1031122310082
1112220807226
126046970142
132c1ca577c6
141713513a4a
15c2241a322
hex73f08c3c2

31122310082 has 16 divisors (see below), whose sum is σ = 47001729600. Its totient is φ = 15455346192.

The previous prime is 31122310081. The next prime is 31122310133. The reversal of 31122310082 is 28001322113.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31122310081) 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 7 ways as a sum of consecutive naturals, for example, 154628 + ... + 293520.

It is an arithmetic number, because the mean of its divisors is an integer number (2937608100).

Almost surely, 231122310082 is an apocalyptic number.

31122310082 is a deficient number, since it is larger than the sum of its proper divisors (15879419518).

31122310082 is a wasteful number, since it uses less digits than its factorization.

31122310082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139657.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 31122310082 its reverse (28001322113), we get a palindrome (59123632195).

The spelling of 31122310082 in words is "thirty-one billion, one hundred twenty-two million, three hundred ten thousand, eighty-two".

Divisors: 1 2 199 398 563 1126 112037 138893 224074 277786 27639707 55279414 78196759 156393518 15561155041 31122310082