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12313111230 = 23257374711239
BaseRepresentation
bin10110111011110101…
…10010101010111110
31011210010021212012200
423131322302222332
5200204124024410
65353452412330
7614062501320
oct133572625276
934703255180
1012313111230
115249480792
1224777770a6
131212ca3344
1484b445610
154c0ebe3c0
hex2ddeb2abe

12313111230 has 192 divisors, whose sum is σ = 38379294720. Its totient is φ = 2679858432.

The previous prime is 12313111211. The next prime is 12313111231. The reversal of 12313111230 is 3211131321.

12313111230 is a `hidden beast` number, since 1 + 231 + 311 + 123 + 0 = 666.

It is a super-2 number, since 2×123131112302 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313111231) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1089951 + ... + 1101189.

It is an arithmetic number, because the mean of its divisors is an integer number (199892160).

Almost surely, 212313111230 is an apocalyptic number.

12313111230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12313111230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19189647360).

12313111230 is an abundant number, since it is smaller than the sum of its proper divisors (26066183490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12313111230 is a wasteful number, since it uses less digits than its factorization.

12313111230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11343 (or 11340 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 12313111230 its reverse (3211131321), we get a palindrome (15524242551).

The spelling of 12313111230 in words is "twelve billion, three hundred thirteen million, one hundred eleven thousand, two hundred thirty".