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20312006326 = 273145195881
BaseRepresentation
bin10010111010101100…
…001001111010110110
31221102120121211110121
4102322230021322312
5313044333200301
613155312442154
71316231130223
oct227254117266
957376554417
1020312006326
118683663a97
123b2a54935a
131bb921a571
14da990294a
157dd34c3a1
hex4bab09eb6

20312006326 has 16 divisors (see below), whose sum is σ = 30906987408. Its totient is φ = 10009872000.

The previous prime is 20312006321. The next prime is 20312006329. The reversal of 20312006326 is 62360021302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20312006326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312006321) 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 7 ways as a sum of consecutive naturals, for example, 163906 + ... + 259786.

It is an arithmetic number, because the mean of its divisors is an integer number (1931686713).

Almost surely, 220312006326 is an apocalyptic number.

20312006326 is a deficient number, since it is larger than the sum of its proper divisors (10594981082).

20312006326 is a wasteful number, since it uses less digits than its factorization.

20312006326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97407.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20312006326 its reverse (62360021302), we get a palindrome (82672027628).

The spelling of 20312006326 in words is "twenty billion, three hundred twelve million, six thousand, three hundred twenty-six".

Divisors: 1 2 73 146 1451 2902 95881 105923 191762 211846 6999313 13998626 139123331 278246662 10156003163 20312006326