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12440223103 = 711241670379
BaseRepresentation
bin10111001010111111…
…01011110101111111
31012002222110210220211
423211133223311333
5200434144114403
65414233053251
7620165103010
oct134537536577
935088423824
1012440223103
1153041aa820
1224b2257227
13123341a379
14860293007
154cc22c06d
hex2e57ebd7f

12440223103 has 16 divisors (see below), whose sum is σ = 15574268160. Its totient is φ = 9653443200.

The previous prime is 12440223091. The next prime is 12440223113. The reversal of 12440223103 is 30132204421.

It is a cyclic number.

It is not a de Polignac number, because 12440223103 - 29 = 12440222591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440223113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316633 + ... + 353746.

It is an arithmetic number, because the mean of its divisors is an integer number (973391760).

Almost surely, 212440223103 is an apocalyptic number.

12440223103 is a deficient number, since it is larger than the sum of its proper divisors (3134045057).

12440223103 is a wasteful number, since it uses less digits than its factorization.

12440223103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670638.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12440223103 its reverse (30132204421), we get a palindrome (42572427524).

The spelling of 12440223103 in words is "twelve billion, four hundred forty million, two hundred twenty-three thousand, one hundred three".

Divisors: 1 7 11 77 241 1687 2651 18557 670379 4692653 7374169 51619183 161561339 1130929373 1777174729 12440223103