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143320230 = 23251983813
BaseRepresentation
bin10001000101011…
…10010010100110
3100222200102101200
420202232102212
5243142221410
622115503330
73360126144
oct1042562246
9328612350
10143320230
117399a679
123bbb7b46
1323900691
141506a594
15c8b03c0
hex88ae4a6

143320230 has 48 divisors (see below), whose sum is σ = 392249520. Its totient is φ = 36206784.

The previous prime is 143320213. The next prime is 143320231. The reversal of 143320230 is 32023341.

143320230 is a `hidden beast` number, since 1 + 433 + 2 + 0 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143320231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40197 + ... + 43616.

It is an arithmetic number, because the mean of its divisors is an integer number (8171865).

Almost surely, 2143320230 is an apocalyptic number.

143320230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

143320230 is an abundant number, since it is smaller than the sum of its proper divisors (248929290).

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

143320230 is a wasteful number, since it uses less digits than its factorization.

143320230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83845 (or 83842 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 143320230 is about 11971.6427444190. The cubic root of 143320230 is about 523.3222084625.

Adding to 143320230 its reverse (32023341), we get a palindrome (175343571).

The spelling of 143320230 in words is "one hundred forty-three million, three hundred twenty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 19 30 38 45 57 90 95 114 171 190 285 342 570 855 1710 83813 167626 251439 419065 502878 754317 838130 1257195 1508634 1592447 2514390 3184894 3771585 4777341 7543170 7962235 9554682 14332023 15924470 23886705 28664046 47773410 71660115 143320230