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12313122102 = 2321936003281
BaseRepresentation
bin10110111011110101…
…10101010100110110
31011210010022102010100
423131322311110312
5200204124401402
65353452534530
7614062545111
oct133572652466
934703272110
1012313122102
115249488976
122477781446
131212ca8288
1484b449578
154c0ec271c
hex2ddeb5536

12313122102 has 24 divisors (see below), whose sum is σ = 28082559960. Its totient is φ = 3888354240.

The previous prime is 12313122077. The next prime is 12313122103. The reversal of 12313122102 is 20122131321.

It is a super-2 number, since 2×123131221022 (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 (12313122103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18001299 + ... + 18001982.

It is an arithmetic number, because the mean of its divisors is an integer number (1170106665).

Almost surely, 212313122102 is an apocalyptic number.

12313122102 is an abundant number, since it is smaller than the sum of its proper divisors (15769437858).

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

12313122102 is a wasteful number, since it uses less digits than its factorization.

12313122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36003308 (or 36003305 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12313122102 its reverse (20122131321), we get a palindrome (32435253423).

The spelling of 12313122102 in words is "twelve billion, three hundred thirteen million, one hundred twenty-two thousand, one hundred two".

Divisors: 1 2 3 6 9 18 19 38 57 114 171 342 36003281 72006562 108009843 216019686 324029529 648059058 684062339 1368124678 2052187017 4104374034 6156561051 12313122102