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13212130131 = 335933125057
BaseRepresentation
bin11000100111000000…
…10001101101010011
31021002202221202022000
430103200101231103
5204024301131011
610023005445043
7645260152554
oct142340215523
937082852260
1013212130131
11566a9a2a12
122688870783
1313273152a5
148d49c832b
15524da5356
hex313811b53

13212130131 has 32 divisors (see below), whose sum is σ = 19966214400. Its totient is φ = 8632293120.

The previous prime is 13212130067. The next prime is 13212130133. The reversal of 13212130131 is 13103121231.

13212130131 is a `hidden beast` number, since 1 + 321 + 213 + 0 + 131 = 666.

It is not a de Polignac number, because 13212130131 - 26 = 13212130067 is a prime.

It is a super-2 number, since 2×132121301312 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13212130133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 514755 + ... + 539811.

It is an arithmetic number, because the mean of its divisors is an integer number (623944200).

Almost surely, 213212130131 is an apocalyptic number.

13212130131 is a deficient number, since it is larger than the sum of its proper divisors (6754084269).

13212130131 is a wasteful number, since it uses less digits than its factorization.

13212130131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25456 (or 25450 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13212130131 its reverse (13103121231), we get a palindrome (26315251362).

The spelling of 13212130131 in words is "thirteen billion, two hundred twelve million, one hundred thirty thousand, one hundred thirty-one".

Divisors: 1 3 9 27 59 177 331 531 993 1593 2979 8937 19529 25057 58587 75171 175761 225513 527283 676539 1478363 4435089 8293867 13305267 24881601 39915801 74644803 223934409 489338153 1468014459 4404043377 13212130131