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123814131385 = 5715123427461
BaseRepresentation
bin111001101001111100…
…1011011011010111001
3102211120211010120010211
41303103321123122321
54012032404201020
6132513542311121
711642141515660
oct1632371333271
9384524116124
10123814131385
114856693851a
121bbb51284a1
13b8a245b949
145dc7b15dd7
153349c6385a
hex1cd3e5b6b9

123814131385 has 16 divisors (see below), whose sum is σ = 170926762752. Its totient is φ = 84338856000.

The previous prime is 123814131319. The next prime is 123814131391. The reversal of 123814131385 is 583131418321.

It is not a de Polignac number, because 123814131385 - 213 = 123814123193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11708446 + ... + 11719015.

It is an arithmetic number, because the mean of its divisors is an integer number (10682922672).

Almost surely, 2123814131385 is an apocalyptic number.

It is an amenable number.

123814131385 is a deficient number, since it is larger than the sum of its proper divisors (47112631367).

123814131385 is a wasteful number, since it uses less digits than its factorization.

123814131385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23427624.

The product of its digits is 69120, while the sum is 40.

The spelling of 123814131385 in words is "one hundred twenty-three billion, eight hundred fourteen million, one hundred thirty-one thousand, three hundred eighty-five".

Divisors: 1 5 7 35 151 755 1057 5285 23427461 117137305 163992227 819961135 3537546611 17687733055 24762826277 123814131385