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13044031131 = 3107223918149
BaseRepresentation
bin11000010010111110…
…00001111010011011
31020200001122102211010
430021133001322123
5203203232444011
65554202505003
7641146302165
oct141137017233
936601572733
1013044031131
11559401971a
122640505163
1312cb54a321
148ba54b935
1551524d1a6
hex3097c1e9b

13044031131 has 16 divisors (see below), whose sum is σ = 17563392000. Its totient is φ = 8610427488.

The previous prime is 13044031129. The next prime is 13044031139. The reversal of 13044031131 is 13113044031.

It is not a de Polignac number, because 13044031131 - 21 = 13044031129 is a prime.

It is a super-2 number, since 2×130440311312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13044031098 and 13044031107.

It is not an unprimeable number, because it can be changed into a prime (13044031139) 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, 709645 + ... + 727793.

It is an arithmetic number, because the mean of its divisors is an integer number (1097712000).

Almost surely, 213044031131 is an apocalyptic number.

13044031131 is a deficient number, since it is larger than the sum of its proper divisors (4519360869).

13044031131 is a wasteful number, since it uses less digits than its factorization.

13044031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20498.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13044031131 its reverse (13113044031), we get a palindrome (26157075162).

The spelling of 13044031131 in words is "thirteen billion, forty-four million, thirty-one thousand, one hundred thirty-one".

Divisors: 1 3 107 321 2239 6717 18149 54447 239573 718719 1941943 5825829 40635611 121906833 4348010377 13044031131