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13243430201 = 40913237211
BaseRepresentation
bin11000101010101111…
…01011010100111001
31021011221211221220212
430111113223110321
5204110304231301
610030044400505
7646120204451
oct142527532471
937157757825
1013243430201
115686631141
122697246135
131330953c41
148d8c14d61
155279d94bb
hex3155eb539

13243430201 has 4 divisors (see below), whose sum is σ = 13246671504. Its totient is φ = 13240188900.

The previous prime is 13243430149. The next prime is 13243430209. The reversal of 13243430201 is 10203434231.

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: 10203434231 = 53192517627.

It is a cyclic number.

It is not a de Polignac number, because 13243430201 - 222 = 13239235897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13243430209) 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, 1614515 + ... + 1622696.

It is an arithmetic number, because the mean of its divisors is an integer number (3311667876).

Almost surely, 213243430201 is an apocalyptic number.

It is an amenable number.

13243430201 is a deficient number, since it is larger than the sum of its proper divisors (3241303).

13243430201 is an equidigital number, since it uses as much as digits as its factorization.

13243430201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241302.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 13243430201 its reverse (10203434231), we get a palindrome (23446864432).

The spelling of 13243430201 in words is "thirteen billion, two hundred forty-three million, four hundred thirty thousand, two hundred one".

Divisors: 1 4091 3237211 13243430201