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13812280723 = 57372407579
BaseRepresentation
bin11001101110100011…
…01010110110010011
31022122121020120010201
430313101222312103
5211241420440343
610202325040031
7666165310003
oct146721526623
938577216121
1013812280723
115948743a3a
122815856017
1313c1764597
149505b0003
1555c90294d
hex33746ad93

13812280723 has 4 divisors (see below), whose sum is σ = 13814694040. Its totient is φ = 13809867408.

The previous prime is 13812280721. The next prime is 13812280753. The reversal of 13812280723 is 32708221831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32708221831 = 38385400057.

It is a cyclic number.

It is not a de Polignac number, because 13812280723 - 21 = 13812280721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13812280721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1198053 + ... + 1209526.

It is an arithmetic number, because the mean of its divisors is an integer number (3453673510).

Almost surely, 213812280723 is an apocalyptic number.

13812280723 is a deficient number, since it is larger than the sum of its proper divisors (2413317).

13812280723 is an equidigital number, since it uses as much as digits as its factorization.

13812280723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413316.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 13812280723 in words is "thirteen billion, eight hundred twelve million, two hundred eighty thousand, seven hundred twenty-three".

Divisors: 1 5737 2407579 13812280723