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231984830 = 25711261449
BaseRepresentation
bin11011101001111…
…00111010111110
3121011112001100202
431310330322332
5433342003310
635004123502
75514560420
oct1564747276
9534461322
10231984830
11109a49700
1265836592
13390a583c
1422b4a810
15155763a5
hexdd3cebe

231984830 has 96 divisors (see below), whose sum is σ = 534340800. Its totient is φ = 70963200.

The previous prime is 231984827. The next prime is 231984853. The reversal of 231984830 is 38489132.

It is a super-2 number, since 2×2319848302 = 107633922700257800, which contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 516446 + ... + 516894.

It is an arithmetic number, because the mean of its divisors is an integer number (5566050).

Almost surely, 2231984830 is an apocalyptic number.

231984830 is an abundant number, since it is smaller than the sum of its proper divisors (302355970).

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

231984830 is a wasteful number, since it uses less digits than its factorization.

231984830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 231984830 is about 15231.0482239405. The cubic root of 231984830 is about 614.4499720159.

The spelling of 231984830 in words is "two hundred thirty-one million, nine hundred eighty-four thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 11 14 22 35 55 61 70 77 110 121 122 154 242 305 385 427 449 605 610 671 770 847 854 898 1210 1342 1694 2135 2245 3143 3355 4235 4270 4490 4697 4939 6286 6710 7381 8470 9394 9878 14762 15715 23485 24695 27389 31430 34573 36905 46970 49390 51667 54329 54778 69146 73810 103334 108658 136945 172865 191723 258335 271645 273890 301279 345730 380303 383446 516670 543290 602558 760606 958615 1506395 1901515 1917230 2108953 3012790 3314069 3803030 4217906 6628138 10544765 16570345 21089530 23198483 33140690 46396966 115992415 231984830