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131020000244 = 227397984491
BaseRepresentation
bin111101000000101100…
…1101000101111110100
3110112012000020121220122
41322001121220233310
54121312110001434
6140104553151112
712315540425000
oct1720131505764
9415160217818
10131020000244
1150624413441
12214863bb498
13c4802c5283
1464acb41700
15361c695c2e
hex1e81668bf4

131020000244 has 48 divisors (see below), whose sum is σ = 270144604800. Its totient is φ = 55572491520.

The previous prime is 131020000217. The next prime is 131020000357. The reversal of 131020000244 is 442000020131.

131020000244 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 359162 + ... + 625329.

It is an arithmetic number, because the mean of its divisors is an integer number (5628012600).

Almost surely, 2131020000244 is an apocalyptic number.

131020000244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131020000244 is an abundant number, since it is smaller than the sum of its proper divisors (139124604556).

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

131020000244 is an equidigital number, since it uses as much as digits as its factorization.

131020000244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984613 (or 984597 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 131020000244 its reverse (442000020131), we get a palindrome (573020020375).

The spelling of 131020000244 in words is "one hundred thirty-one billion, twenty million, two hundred forty-four", and thus it is an aban number.

Divisors: 1 2 4 7 14 28 49 97 98 194 196 343 388 679 686 1358 1372 2716 4753 9506 19012 33271 66542 133084 984491 1968982 3937964 6891437 13782874 27565748 48240059 95495627 96480118 190991254 192960236 337680413 381982508 668469389 675360826 1336938778 1350721652 2673877556 4679285723 9358571446 18717142892 32755000061 65510000122 131020000244