Numbers 230,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

[1M] & [10M] & [100M- [200M] - [300M] - [400M] - [500M] - [600M] - [700M] - [800M] - [900M]  & [1B]

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231,800,625

[Math.]  Sum of the first 174 cube numbers:

13+23+…+1743 = 231,800,625 = (1+2+…+174)2 = 15,2252.

234,567,901

[Math.]  012345679 is the 9-digit period of the rational number: 1/81 = 0.012345679012345679… or 0.012,345,679.

Multiples of 012345679 by 1, 10, 19, 28, 37, 46, 55, 64 and 73 yield all 9 digit-rotations of the number itself: 012,345,679, 123,456,790, 234,567,901, 345,679,012, 456,790,123, 567,901,234, 679,012,345, 790,123,456 and 901,234,567.  All numbers are missing digit 8.

Multiples of 012345679 by a number from 1 to 80 of the form x (mod 9), where x = 1, 2, 4, 5, 7 or 8, will yield a 9-digit number, including all but one digit from 0 to 9. The missing digit is (9–x), again taking only values: 8, 7, 5, 4, 2 or 1. (Adding extra 0 to any 8-digit numbers). Its multiple by 81 is 999,999,999.

235,714,609

[Math.]  153532 = 235,714,609, a square using all 9 digits 0-9 once, except digit 8.

236,364,091

[Math.]  The numerator of the 24th Bernoulli number: B24 = 236364091/2730.

236,719,458

[Language]  The 9-digit number whose digits are distinct and in the English alphabetical backward consecutive order. It still holds true if adding zero (0) in front of the number.

237,160,000

[Math.] Sum of the first 175 cube numbers:

13+23+…+1753 = 237,160,000 = (1+2+…+175)2 = 15,4002.

xyz,abc,def

[Math.]   For any xyz = 100 to 999, there are always six 6-digit numbers abc,edf such that the sum (xyz+abc,def) is equal to one of 6 digit-rotations of 142,857 and the number  xyz,abc,def is a multiple of 142,857.

For any xyz = 100 to 999, there are always twelve 6-digit numbers abc,edf such that the sum (xyz+abc,def) is equal to one of 12 digit-rotations of 076,923 or 153,846 and the number xyz,abc,def is a multiple of 76,923.