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12313312223 = 231196944729
BaseRepresentation
bin10110111011110111…
…00011101111011111
31011210010200001220212
423131323203233133
5200204201442343
65353501003035
7614064266312
oct133573435737
934703601825
1012313312223
1152495a87a3
12247785347b
131213043984
1484b498979
154c100dc18
hex2ddee3bdf

12313312223 has 8 divisors (see below), whose sum is σ = 12850034400. Its totient is φ = 11776703488.

The previous prime is 12313312181. The next prime is 12313312229. The reversal of 12313312223 is 32221331321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12313312223 - 212 = 12313308127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313312229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252923 + ... + 297651.

It is an arithmetic number, because the mean of its divisors is an integer number (1606254300).

Almost surely, 212313312223 is an apocalyptic number.

12313312223 is a deficient number, since it is larger than the sum of its proper divisors (536722177).

12313312223 is a wasteful number, since it uses less digits than its factorization.

12313312223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56721.

The product of its digits is 1296, while the sum is 23.

Adding to 12313312223 its reverse (32221331321), we get a palindrome (44534643544).

The spelling of 12313312223 in words is "twelve billion, three hundred thirteen million, three hundred twelve thousand, two hundred twenty-three".

Divisors: 1 23 11969 44729 275287 1028767 535361401 12313312223