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12313121314 = 213236429353
BaseRepresentation
bin10110111011110101…
…10101001000100010
31011210010022101001011
423131322311020202
5200204124340224
65353452531134
7614062542604
oct133572651042
934703271034
1012313121314
11524948831a
122477780aaa
131212ca7b00
1484b449174
154c0ec2394
hex2ddeb5222

12313121314 has 12 divisors (see below), whose sum is σ = 19999715346. Its totient is φ = 5682978912.

The previous prime is 12313121311. The next prime is 12313121321. The reversal of 12313121314 is 41312131321.

It can be written as a sum of positive squares in 3 ways, for example, as 2564916025 + 9748205289 = 50645^2 + 98733^2 .

It is a super-2 number, since 2×123131213142 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12313121311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18214339 + ... + 18215014.

Almost surely, 212313121314 is an apocalyptic number.

12313121314 is a deficient number, since it is larger than the sum of its proper divisors (7686594032).

12313121314 is a wasteful number, since it uses less digits than its factorization.

12313121314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36429381 (or 36429368 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 12313121314 its reverse (41312131321), we get a palindrome (53625252635).

The spelling of 12313121314 in words is "twelve billion, three hundred thirteen million, one hundred twenty-one thousand, three hundred fourteen".

Divisors: 1 2 13 26 169 338 36429353 72858706 473581589 947163178 6156560657 12313121314