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20010231230002 = 2131735557800557
BaseRepresentation
bin1001000110010111111101…
…01110010110111000110010
32121211221220102022211201021
410203023332232112320302
510110321423143330002
6110320323500530054
74133456120031526
oct443137656267062
977757812284637
1020010231230002
116415322955622
1222b2149b5092a
13b21c58b712a0
144d2700db1d86
1524a7a31bb737
hex1232feb96e32

20010231230002 has 32 divisors (see below), whose sum is σ = 32516955968112. Its totient is φ = 9180443176704.

The previous prime is 20010231229991. The next prime is 20010231230039. The reversal of 20010231230002 is 20003213201002.

It can be written as a sum of positive squares in 8 ways, for example, as 13472283952521 + 6537947277481 = 3670461^2 + 2556941^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24595108 + ... + 25395664.

Almost surely, 220010231230002 is an apocalyptic number.

20010231230002 is a deficient number, since it is larger than the sum of its proper divisors (12506724738110).

20010231230002 is a wasteful number, since it uses less digits than its factorization.

20010231230002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806302.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20010231230002 its reverse (20003213201002), we get a palindrome (40013444431004).

The spelling of 20010231230002 in words is "twenty trillion, ten billion, two hundred thirty-one million, two hundred thirty thousand, two".

Divisors: 1 2 13 26 173 346 2249 4498 5557 11114 72241 144482 800557 961361 1601114 1922722 10407241 12497693 20814482 24995386 138496361 276992722 1800452693 3600905386 4448695249 8897390498 57833038237 115666076474 769624278077 1539248556154 10005115615001 20010231230002