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13010231212 = 22112149223809
BaseRepresentation
bin11000001110111100…
…00101111110101100
31020120201001020001021
430013132011332230
5203121104344322
65550554223524
7640256066146
oct140736057654
936521036037
1013010231212
115576a33300
122631124ba4
1312c4544884
148b5c6dc96
155122c34c7
hex307785fac

13010231212 has 72 divisors (see below), whose sum is σ = 25338096000. Its totient is φ = 5840482560.

The previous prime is 13010231173. The next prime is 13010231237. The reversal of 13010231212 is 21213201031.

It is a super-2 number, since 2×130102312122 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16081464 + ... + 16082272.

It is an arithmetic number, because the mean of its divisors is an integer number (351918000).

Almost surely, 213010231212 is an apocalyptic number.

It is an amenable number.

13010231212 is a deficient number, since it is larger than the sum of its proper divisors (12327864788).

13010231212 is a wasteful number, since it uses less digits than its factorization.

13010231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13010231212 its reverse (21213201031), we get a palindrome (34223432243).

The spelling of 13010231212 in words is "thirteen billion, ten million, two hundred thirty-one thousand, two hundred twelve".

Divisors: 1 2 4 11 22 44 121 149 223 242 298 446 484 596 809 892 1618 1639 2453 3236 3278 4906 6556 8899 9812 17798 18029 26983 33227 35596 36058 53966 66454 72116 97889 107932 120541 132908 180407 195778 241082 360814 365497 391556 482164 721628 730994 1325951 1461988 1984477 2651902 3968954 4020467 5303804 7937908 8040934 14585461 16081868 21829247 26880643 29170922 43658494 53761286 58341844 87316988 107522572 295687073 591374146 1182748292 3252557803 6505115606 13010231212