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123381230 = 2571762589
BaseRepresentation
bin1110101101010…
…10010111101110
322121011102020012
413112222113232
5223041144410
620124253222
73025503020
oct726522756
9277142205
10123381230
1163711165
12353a1212
131c73bc5b
141255a010
15ac72605
hex75aa5ee

123381230 has 16 divisors (see below), whose sum is σ = 253812960. Its totient is φ = 42302112.

The previous prime is 123381229. The next prime is 123381239. The reversal of 123381230 is 32183321.

It is a junction number, because it is equal to n+sod(n) for n = 123381196 and 123381205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123381239) 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 7 ways as a sum of consecutive naturals, for example, 881225 + ... + 881364.

It is an arithmetic number, because the mean of its divisors is an integer number (15863310).

Almost surely, 2123381230 is an apocalyptic number.

123381230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123381230 is an abundant number, since it is smaller than the sum of its proper divisors (130431730).

123381230 is a wasteful number, since it uses less digits than its factorization.

123381230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762603.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 123381230 is about 11107.7103851334. The cubic root of 123381230 is about 497.8322553482.

The spelling of 123381230 in words is "one hundred twenty-three million, three hundred eighty-one thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 1762589 3525178 8812945 12338123 17625890 24676246 61690615 123381230