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13031443143 = 321785172831
BaseRepresentation
bin11000010001011110…
…00000101011000111
31020122011221220100100
430020233000223013
5203142022140033
65553033015143
7640634303415
oct141057005307
936564856310
1013031443143
115587a01124
1226382544b3
1312c8a60804
148b89d22b5
155140b3513
hex308bc0ac7

13031443143 has 12 divisors (see below), whose sum is σ = 19930442688. Its totient is φ = 8176591680.

The previous prime is 13031443133. The next prime is 13031443169. The reversal of 13031443143 is 34134413031.

13031443143 is a `hidden beast` number, since 1 + 30 + 314 + 4 + 314 + 3 = 666.

It is not a de Polignac number, because 13031443143 - 24 = 13031443127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031443133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42586263 + ... + 42586568.

It is an arithmetic number, because the mean of its divisors is an integer number (1660870224).

Almost surely, 213031443143 is an apocalyptic number.

13031443143 is a deficient number, since it is larger than the sum of its proper divisors (6898999545).

13031443143 is a wasteful number, since it uses less digits than its factorization.

13031443143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85172854 (or 85172851 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 13031443143 its reverse (34134413031), we get a palindrome (47165856174).

The spelling of 13031443143 in words is "thirteen billion, thirty-one million, four hundred forty-three thousand, one hundred forty-three".

Divisors: 1 3 9 17 51 153 85172831 255518493 766555479 1447938127 4343814381 13031443143