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12311110230 = 2351921598439
BaseRepresentation
bin10110111011100110…
…01010001001010110
31011202222112012100120
423131303022021112
5200203121011410
65353341452410
7614036465436
oct133563121126
934688465316
1012311110230
115248334371
122476b71106
131212752613
1484b0842c6
154c0c26570
hex2ddcca256

12311110230 has 32 divisors (see below), whose sum is σ = 31101753600. Its totient is φ = 3110175072.

The previous prime is 12311110199. The next prime is 12311110237. The reversal of 12311110230 is 3201111321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311110237) 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, 10798650 + ... + 10799789.

It is an arithmetic number, because the mean of its divisors is an integer number (971929800).

Almost surely, 212311110230 is an apocalyptic number.

12311110230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12311110230 is an abundant number, since it is smaller than the sum of its proper divisors (18790643370).

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

12311110230 is a wasteful number, since it uses less digits than its factorization.

12311110230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21598468.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12311110230 its reverse (3201111321), we get a palindrome (15512221551).

The spelling of 12311110230 in words is "twelve billion, three hundred eleven million, one hundred ten thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 21598439 43196878 64795317 107992195 129590634 215984390 323976585 410370341 647953170 820740682 1231111023 2051851705 2462222046 4103703410 6155555115 12311110230