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13230332231 = 27314844501
BaseRepresentation
bin11000101001001011…
…01101100101000111
31021011001012111212212
430110211231211013
5204043431112411
610024455534035
7645600653114
oct142445554507
937131174785
1013230332231
11567a1a5476
12269298a31b
13132b01926c
148d71a590b
1552679d68b
hex31496d947

13230332231 has 4 divisors (see below), whose sum is σ = 13235179464. Its totient is φ = 13225485000.

The previous prime is 13230332131. The next prime is 13230332233. The reversal of 13230332231 is 13223303231.

13230332231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13223303231 = 41322519591.

It is a cyclic number.

It is not a de Polignac number, because 13230332231 - 210 = 13230331207 is a prime.

It is a super-2 number, since 2×132303322312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13230332197 and 13230332206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13230332233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2419520 + ... + 2424981.

It is an arithmetic number, because the mean of its divisors is an integer number (3308794866).

Almost surely, 213230332231 is an apocalyptic number.

13230332231 is a deficient number, since it is larger than the sum of its proper divisors (4847233).

13230332231 is an equidigital number, since it uses as much as digits as its factorization.

13230332231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4847232.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 13230332231 its reverse (13223303231), we get a palindrome (26453635462).

The spelling of 13230332231 in words is "thirteen billion, two hundred thirty million, three hundred thirty-two thousand, two hundred thirty-one".

Divisors: 1 2731 4844501 13230332231