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13830123 = 331148711
BaseRepresentation
bin110100110000…
…011111101011
3222000122100210
4310300133223
512020030443
61212232203
7225361026
oct64603753
928018323
1013830123
11789685a
12476b663
132b33008
141ba01bd
151332c33
hexd307eb

13830123 has 8 divisors (see below), whose sum is σ = 19035136. Its totient is φ = 8922600.

The previous prime is 13830121. The next prime is 13830127. The reversal of 13830123 is 32103831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13830123 - 21 = 13830121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13830123.

It is not an unprimeable number, because it can be changed into a prime (13830121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74263 + ... + 74448.

It is an arithmetic number, because the mean of its divisors is an integer number (2379392).

Almost surely, 213830123 is an apocalyptic number.

13830123 is a deficient number, since it is larger than the sum of its proper divisors (5205013).

13830123 is a wasteful number, since it uses less digits than its factorization.

13830123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148745.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 13830123 is about 3718.8873335986. The cubic root of 13830123 is about 240.0354287975.

Adding to 13830123 its reverse (32103831), we get a palindrome (45933954).

It can be divided in two parts, 13830 and 123, that multiplied together give a triangular number (1701090 = T1844).

The spelling of 13830123 in words is "thirteen million, eight hundred thirty thousand, one hundred twenty-three".

Divisors: 1 3 31 93 148711 446133 4610041 13830123