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231502068 = 223272263499
BaseRepresentation
bin11011100110001…
…11000011110100
3121010121112010200
431303013003310
5433231031233
634545520500
75510510100
oct1563070364
9533545120
10231502068
11109749a26
1265643130
1338c66b95
1422a62900
15154cd313
hexdcc70f4

231502068 has 108 divisors (see below), whose sum is σ = 684684000. Its totient is φ = 65759904.

The previous prime is 231502027. The next prime is 231502093. The reversal of 231502068 is 860205132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 463683 + ... + 464181.

Almost surely, 2231502068 is an apocalyptic number.

231502068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231502068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342342000).

231502068 is an abundant number, since it is smaller than the sum of its proper divisors (453181932).

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

231502068 is a wasteful number, since it uses less digits than its factorization.

231502068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 231502068 is about 15215.1920132478. The cubic root of 231502068 is about 614.0234511657.

The spelling of 231502068 in words is "two hundred thirty-one million, five hundred two thousand, sixty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 28 36 42 49 63 84 98 126 147 196 252 263 294 441 499 526 588 789 882 998 1052 1497 1578 1764 1841 1996 2367 2994 3156 3493 3682 4491 4734 5523 5988 6986 7364 8982 9468 10479 11046 12887 13972 16569 17964 20958 22092 24451 25774 31437 33138 38661 41916 48902 51548 62874 66276 73353 77322 97804 115983 125748 131237 146706 154644 220059 231966 262474 293412 393711 440118 463932 524948 787422 880236 918659 1181133 1574844 1837318 2362266 2755977 3674636 4724532 5511954 6430613 8267931 11023908 12861226 16535862 19291839 25722452 33071724 38583678 57875517 77167356 115751034 231502068