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13124304215 = 5111726952181
BaseRepresentation
bin11000011100100010…
…01111110101010111
31020212122200201210022
430032101033311113
5203334310213330
610010151215355
7643142513411
oct141621176527
936778621708
1013124304215
115625367010
12266337755b
131312074aa9
148c70859b1
1551c307ae5
hex30e44fd57

13124304215 has 32 divisors (see below), whose sum is σ = 18259525440. Its totient is φ = 8949913600.

The previous prime is 13124304199. The next prime is 13124304223. The reversal of 13124304215 is 51240342131.

It is a happy number.

It is not a de Polignac number, because 13124304215 - 24 = 13124304199 is a prime.

It is a super-2 number, since 2×131243042152 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 225425 + ... + 277605.

It is an arithmetic number, because the mean of its divisors is an integer number (570610170).

Almost surely, 213124304215 is an apocalyptic number.

13124304215 is a deficient number, since it is larger than the sum of its proper divisors (5135221225).

13124304215 is a wasteful number, since it uses less digits than its factorization.

13124304215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52483.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 13124304215 its reverse (51240342131), we get a palindrome (64364646346).

The spelling of 13124304215 in words is "thirteen billion, one hundred twenty-four million, three hundred four thousand, two hundred fifteen".

Divisors: 1 5 11 17 55 85 187 269 935 1345 2959 4573 14795 22865 50303 52181 251515 260905 573991 887077 2869955 4435385 9757847 14036689 48789235 70183445 154403579 238623713 772017895 1193118565 2624860843 13124304215