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13230001213 = 112138410681
BaseRepresentation
bin11000101001001000…
…11100110000111101
31021011000120200210221
430110210130300331
5204043340014323
610024444501341
7645565104052
oct142444346075
937130520727
1013230001213
115679a99800
12269284a851
13132ac316b0
148d711b029
1552673555d
hex31491cc3d

13230001213 has 12 divisors (see below), whose sum is σ = 15660689884. Its totient is φ = 11102097600.

The previous prime is 13230001157. The next prime is 13230001219. The reversal of 13230001213 is 31210003231.

It can be written as a sum of positive squares in 2 ways, for example, as 7662901444 + 5567099769 = 87538^2 + 74613^2 .

It is not a de Polignac number, because 13230001213 - 29 = 13230000701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13230001219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4203768 + ... + 4206913.

Almost surely, 213230001213 is an apocalyptic number.

13230001213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13230001213 is a deficient number, since it is larger than the sum of its proper divisors (2430688671).

13230001213 is a wasteful number, since it uses less digits than its factorization.

13230001213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410716 (or 8410705 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 13230001213 its reverse (31210003231), we get a palindrome (44440004444).

The spelling of 13230001213 in words is "thirteen billion, two hundred thirty million, one thousand, two hundred thirteen".

Divisors: 1 11 13 121 143 1573 8410681 92517491 109338853 1017692401 1202727383 13230001213