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144984231 = 32719121123
BaseRepresentation
bin10001010010001…
…00100010100111
3101002210221222100
420221010202213
5244103443411
622215303143
73410226360
oct1051044247
9332727870
10144984231
1174926887
124067aab3
1324063bb2
1415380b67
15cadd456
hex8a448a7

144984231 has 24 divisors (see below), whose sum is σ = 251937920. Its totient is φ = 78487056.

The previous prime is 144984221. The next prime is 144984233. The reversal of 144984231 is 132489441.

It is a happy number.

144984231 is a `hidden beast` number, since 144 + 98 + 423 + 1 = 666.

It is not a de Polignac number, because 144984231 - 29 = 144983719 is a prime.

It is a super-2 number, since 2×1449842312 = 42040854477322722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144984233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59365 + ... + 61758.

Almost surely, 2144984231 is an apocalyptic number.

144984231 is a deficient number, since it is larger than the sum of its proper divisors (106953689).

144984231 is a wasteful number, since it uses less digits than its factorization.

144984231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121155 (or 121152 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 144984231 is about 12040.9397889035. The cubic root of 144984231 is about 525.3397420009.

The spelling of 144984231 in words is "one hundred forty-four million, nine hundred eighty-four thousand, two hundred thirty-one".

Divisors: 1 3 7 9 19 21 57 63 133 171 399 1197 121123 363369 847861 1090107 2301337 2543583 6904011 7630749 16109359 20712033 48328077 144984231