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13031012000 = 25533257753
BaseRepresentation
bin11000010001011010…
…10111011010100000
31020122011010222221002
430020231113122200
5203141414341000
65553015451132
7640630526426
oct141055273240
936564128832
1013031012000
115587737206
122638086aa8
1312c893c4b6
148b891d116
1551402a8d5
hex308b576a0

13031012000 has 48 divisors (see below), whose sum is σ = 32017206312. Its totient is φ = 5212403200.

The previous prime is 13031011991. The next prime is 13031012053. The reversal of 13031012000 is 21013031.

It can be written as a sum of positive squares in 4 ways, for example, as 3815779984 + 9215232016 = 61772^2 + 95996^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1624877 + ... + 1632876.

Almost surely, 213031012000 is an apocalyptic number.

13031012000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13031012000 is an abundant number, since it is smaller than the sum of its proper divisors (18986194312).

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

13031012000 is an equidigital number, since it uses as much as digits as its factorization.

13031012000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257778 (or 3257760 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 13031012000 its reverse (21013031), we get a palindrome (13052025031).

The spelling of 13031012000 in words is "thirteen billion, thirty-one million, twelve thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 800 1000 2000 4000 3257753 6515506 13031012 16288765 26062024 32577530 52124048 65155060 81443825 104248096 130310120 162887650 260620240 325775300 407219125 521240480 651550600 814438250 1303101200 1628876500 2606202400 3257753000 6515506000 13031012000