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13211213113 = 71887316159
BaseRepresentation
bin11000100110111001…
…10001110100111001
31021002201020011101101
430103130301310321
5204024032304423
610022534051401
7645246313210
oct142334616471
937081204341
1013211213113
11566a426a4a
1226884a9b61
131327083a87
148d482a077
15524c737ad
hex313731d39

13211213113 has 4 divisors (see below), whose sum is σ = 15098529280. Its totient is φ = 11323896948.

The previous prime is 13211213101. The next prime is 13211213159. The reversal of 13211213113 is 31131211231.

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: 31131211231 = 102893025679.

It is a de Polignac number, because none of the positive numbers 2k-13211213113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13211213173) 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, 943658073 + ... + 943658086.

It is an arithmetic number, because the mean of its divisors is an integer number (3774632320).

Almost surely, 213211213113 is an apocalyptic number.

It is an amenable number.

13211213113 is a deficient number, since it is larger than the sum of its proper divisors (1887316167).

13211213113 is an equidigital number, since it uses as much as digits as its factorization.

13211213113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887316166.

The product of its digits is 108, while the sum is 19.

Adding to 13211213113 its reverse (31131211231), we get a palindrome (44342424344).

The spelling of 13211213113 in words is "thirteen billion, two hundred eleven million, two hundred thirteen thousand, one hundred thirteen".

Divisors: 1 7 1887316159 13211213113