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10131212244 = 2235315929579
BaseRepresentation
bin10010110111101111…
…00000011111010100
3222011001122220111010
421123313200133110
5131222042242434
64353151012220
7506026611636
oct113367403724
928131586433
1010131212244
11432989478a
121b68b0a070
13c55c3b95a
146c175aa56
153e467a9e9
hex25bde07d4

10131212244 has 24 divisors (see below), whose sum is σ = 24085524960. Its totient is φ = 3313352224.

The previous prime is 10131212233. The next prime is 10131212249. The reversal of 10131212244 is 44221213101.

It is a self number, because there is not a number n which added to its sum of digits gives 10131212244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131212249) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7964154 + ... + 7965425.

It is an arithmetic number, because the mean of its divisors is an integer number (1003563540).

Almost surely, 210131212244 is an apocalyptic number.

It is an amenable number.

10131212244 is an abundant number, since it is smaller than the sum of its proper divisors (13954312716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10131212244 is a wasteful number, since it uses less digits than its factorization.

10131212244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15929639 (or 15929637 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 10131212244 its reverse (44221213101), we get a palindrome (54352425345).

The spelling of 10131212244 in words is "ten billion, one hundred thirty-one million, two hundred twelve thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 12 53 106 159 212 318 636 15929579 31859158 47788737 63718316 95577474 191154948 844267687 1688535374 2532803061 3377070748 5065606122 10131212244