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12231234213 = 3112912780809
BaseRepresentation
bin10110110010000100…
…11101001010100101
31011120102020002001120
423121002131022211
5200022143443323
65341405444153
7612046526652
oct133102351245
934512202046
1012231234213
115207238330
122454270659
1311cc0367c3
14840610c29
154b8be95e3
hex2d909d2a5

12231234213 has 16 divisors (see below), whose sum is σ = 18404366400. Its totient is φ = 7157252480.

The previous prime is 12231234209. The next prime is 12231234217. The reversal of 12231234213 is 31243213221.

It is an interprime number because it is at equal distance from previous prime (12231234209) and next prime (12231234217).

It is a cyclic number.

It is not a de Polignac number, because 12231234213 - 22 = 12231234209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231234217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6389448 + ... + 6391361.

It is an arithmetic number, because the mean of its divisors is an integer number (1150272900).

Almost surely, 212231234213 is an apocalyptic number.

It is an amenable number.

12231234213 is a deficient number, since it is larger than the sum of its proper divisors (6173132187).

12231234213 is a wasteful number, since it uses less digits than its factorization.

12231234213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12780852.

The product of its digits is 1728, while the sum is 24.

Adding to 12231234213 its reverse (31243213221), we get a palindrome (43474447434).

The spelling of 12231234213 in words is "twelve billion, two hundred thirty-one million, two hundred thirty-four thousand, two hundred thirteen".

Divisors: 1 3 11 29 33 87 319 957 12780809 38342427 140588899 370643461 421766697 1111930383 4077078071 12231234213