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13123113022013 = 69499188824487
BaseRepresentation
bin1011111011110111011001…
…1111010111001000111101
31201110120001022101001011112
42332331312133113020331
53210002113413201023
643524401435531405
72523053655125621
oct276756637271075
951416038331145
1013123113022013
1141aa532200385
12157b41bbb9b65
13742672aa9a37
1433523a995181
1517b567aa9478
hexbef767d723d

13123113022013 has 4 divisors (see below), whose sum is σ = 13123301916000. Its totient is φ = 13122924128028.

The previous prime is 13123113021989. The next prime is 13123113022037. The reversal of 13123113022013 is 31022031132131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (13123113021989) and next prime (13123113022037).

It is a cyclic number.

It is not a de Polignac number, because 13123113022013 - 226 = 13123045913149 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 13123113022013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123110022013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94342745 + ... + 94481742.

It is an arithmetic number, because the mean of its divisors is an integer number (3280825479000).

Almost surely, 213123113022013 is an apocalyptic number.

It is an amenable number.

13123113022013 is a deficient number, since it is larger than the sum of its proper divisors (188893987).

13123113022013 is an equidigital number, since it uses as much as digits as its factorization.

13123113022013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188893986.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 13123113022013 its reverse (31022031132131), we get a palindrome (44145144154144).

The spelling of 13123113022013 in words is "thirteen trillion, one hundred twenty-three billion, one hundred thirteen million, twenty-two thousand, thirteen".

Divisors: 1 69499 188824487 13123113022013