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31230330001 = 131937107109293
BaseRepresentation
bin11101000101011110…
…010000010010010001
32222121111101010211221
4131011132100102101
51002424431030001
622202542205041
72153626265533
oct350536202221
988544333757
1031230330001
1112276786192
126076b83781
132c39248810
1417239d1853
15c2bb561a1
hex745790491

31230330001 has 64 divisors (see below), whose sum is σ = 37162540800. Its totient is φ = 25993737216.

The previous prime is 31230329957. The next prime is 31230330011. The reversal of 31230330001 is 10003303213.

It is a cyclic number.

It is not a de Polignac number, because 31230330001 - 213 = 31230321809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31230330011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 106588011 + ... + 106588303.

It is an arithmetic number, because the mean of its divisors is an integer number (580664700).

Almost surely, 231230330001 is an apocalyptic number.

It is an amenable number.

31230330001 is a deficient number, since it is larger than the sum of its proper divisors (5932210799).

31230330001 is a wasteful number, since it uses less digits than its factorization.

31230330001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 31230330001 its reverse (10003303213), we get a palindrome (41233633214).

The spelling of 31230330001 in words is "thirty-one billion, two hundred thirty million, three hundred thirty thousand, one".

Divisors: 1 13 19 37 107 109 247 293 481 703 1391 1417 2033 2071 3809 3959 4033 5567 9139 10841 11663 26429 26923 31351 31937 51467 52429 72371 75221 76627 140933 151619 205979 221597 407563 415181 431531 595669 606803 977873 996151 1159987 1181669 2677727 2880761 3417259 5609903 7743697 7888439 8199089 15079831 15361697 22039753 22451711 44424367 64927921 106588157 126438583 286516789 291872243 844062973 1643701579 2402333077 31230330001