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13423242013 = 127105694819
BaseRepresentation
bin11001000000001011…
…00110101100011101
31021122111012100100121
430200011212230131
5204442322221023
610055550354541
7653432450236
oct144005465435
937574170317
1013423242013
115769085445
1227274bba51
13135bc9026c
14914a6008d
155386a6d5d
hex320166b1d

13423242013 has 4 divisors (see below), whose sum is σ = 13528936960. Its totient is φ = 13317547068.

The previous prime is 13423241989. The next prime is 13423242029. The reversal of 13423242013 is 31024232431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31024232431 = 40737617047.

It is a cyclic number.

It is not a de Polignac number, because 13423242013 - 229 = 12886371101 is a prime.

It is a super-2 number, since 2×134232420132 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423243013) 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, 52847283 + ... + 52847536.

It is an arithmetic number, because the mean of its divisors is an integer number (3382234240).

Almost surely, 213423242013 is an apocalyptic number.

It is an amenable number.

13423242013 is a deficient number, since it is larger than the sum of its proper divisors (105694947).

13423242013 is a wasteful number, since it uses less digits than its factorization.

13423242013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105694946.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 13423242013 its reverse (31024232431), we get a palindrome (44447474444).

The spelling of 13423242013 in words is "thirteen billion, four hundred twenty-three million, two hundred forty-two thousand, thirteen".

Divisors: 1 127 105694819 13423242013