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143244213 = 3753179719
BaseRepresentation
bin10001000100110…
…11101110110101
3100222112120010020
420202123232311
5243132303323
622114115353
73356361420
oct1042335665
9328476106
10143244213
1173948552
123bb7bb59
13238a4bb8
141504a9b7
15c897ae3
hex889bbb5

143244213 has 32 divisors (see below), whose sum is σ = 223948800. Its totient is φ = 79749696.

The previous prime is 143244169. The next prime is 143244221. The reversal of 143244213 is 312442341.

It is not a de Polignac number, because 143244213 - 212 = 143240117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143249213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198868 + ... + 199586.

It is an arithmetic number, because the mean of its divisors is an integer number (6998400).

Almost surely, 2143244213 is an apocalyptic number.

It is an amenable number.

143244213 is a deficient number, since it is larger than the sum of its proper divisors (80704587).

143244213 is a wasteful number, since it uses less digits than its factorization.

143244213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its digits is 2304, while the sum is 24.

The square root of 143244213 is about 11968.4674457509. The cubic root of 143244213 is about 523.2296687940.

Adding to 143244213 its reverse (312442341), we get a palindrome (455686554).

The spelling of 143244213 in words is "one hundred forty-three million, two hundred forty-four thousand, two hundred thirteen".

Divisors: 1 3 7 21 53 159 179 371 537 719 1113 1253 2157 3759 5033 9487 15099 28461 38107 66409 114321 128701 199227 266749 386103 800247 900907 2702721 6821153 20463459 47748071 143244213