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231450552 = 233219891901
BaseRepresentation
bin11011100101110…
…10011110111000
3121010111220110200
431302322132320
5433222404202
634544442200
75510203644
oct1562723670
9533456420
10231450552
11109714253
1265619360
1338c495b8
1422a4bc24
15154bce1c
hexdcba7b8

231450552 has 96 divisors (see below), whose sum is σ = 667602000. Its totient is φ = 72230400.

The previous prime is 231450551. The next prime is 231450613. The reversal of 231450552 is 255054132.

It is a happy number.

It is a super-2 number, since 2×2314505522 = 107138716042209408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231450551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120802 + ... + 122702.

Almost surely, 2231450552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231450552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333801000).

231450552 is an abundant number, since it is smaller than the sum of its proper divisors (436151448).

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

231450552 is a wasteful number, since it uses less digits than its factorization.

231450552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021 (or 2014 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 231450552 is about 15213.4990058172. The cubic root of 231450552 is about 613.9779017112.

The spelling of 231450552 in words is "two hundred thirty-one million, four hundred fifty thousand, five hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 18 19 24 36 38 57 72 76 89 114 152 171 178 228 267 342 356 456 534 684 712 801 1068 1368 1602 1691 1901 2136 3204 3382 3802 5073 5703 6408 6764 7604 10146 11406 13528 15208 15219 17109 20292 22812 30438 34218 36119 40584 45624 60876 68436 72238 108357 121752 136872 144476 169189 216714 288952 325071 338378 433428 507567 650142 676756 866856 1015134 1300284 1353512 1522701 2030268 2600568 3045402 3214591 4060536 6090804 6429182 9643773 12181608 12858364 19287546 25716728 28931319 38575092 57862638 77150184 115725276 231450552