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231010206 = 237223127269
BaseRepresentation
bin11011100010011…
…10111110011110
3121002200112102120
431301032332132
5433114311311
634531203410
75503361100
oct1561167636
9532615376
10231010206
11109443429
1265446566
1338b2403b
1422975570
1515432706
hexdc4ef9e

231010206 has 96 divisors (see below), whose sum is σ = 567336960. Its totient is φ = 62403264.

The previous prime is 231010103. The next prime is 231010223. The reversal of 231010206 is 602010132.

231010206 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 858640 + ... + 858908.

It is an arithmetic number, because the mean of its divisors is an integer number (5909760).

Almost surely, 2231010206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231010206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283668480).

231010206 is an abundant number, since it is smaller than the sum of its proper divisors (336326754).

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

231010206 is a wasteful number, since it uses less digits than its factorization.

231010206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 231010206 is about 15199.0199026121. The cubic root of 231010206 is about 613.5882801820.

Adding to 231010206 its reverse (602010132), we get a palindrome (833020338).

The spelling of 231010206 in words is "two hundred thirty-one million, ten thousand, two hundred six".

Divisors: 1 2 3 6 7 14 21 23 42 46 49 69 98 127 138 147 161 254 269 294 322 381 483 538 762 807 889 966 1127 1614 1778 1883 2254 2667 2921 3381 3766 5334 5649 5842 6187 6223 6762 8763 11298 12374 12446 13181 17526 18561 18669 20447 26362 34163 37122 37338 39543 40894 43309 61341 68326 79086 86618 102489 122682 129927 143129 204978 239141 259854 286258 303163 429387 478282 606326 717423 785749 858774 909489 1434846 1571498 1673987 1818978 2357247 3347974 4714494 5021961 5500243 10043922 11000486 16500729 33001458 38501701 77003402 115505103 231010206