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12131103210113 = 293854331085309
BaseRepresentation
bin1011000010000111111000…
…0110001111101010000001
31120221201111102220020012002
42300201332012033222001
53042223444410210423
641444541334513345
72361305021632616
oct260417606175201
946851442806162
1012131103210113
113957854561028
12143b109b05855
1369cc5bcca264
142dd2117c050d
15160857a51228
hexb087e18fa81

12131103210113 has 8 divisors (see below), whose sum is σ = 12549461236200. Its totient is φ = 11712748125568.

The previous prime is 12131103210091. The next prime is 12131103210119. The reversal of 12131103210113 is 31101230113121.

It can be written as a sum of positive squares in 4 ways, for example, as 1840301156929 + 10290802053184 = 1356577^2 + 3207928^2 .

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 12131103210113 - 26 = 12131103210049 is a prime.

It is a super-3 number, since 3×121311032101133 (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12131103210119) 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, 10634903 + ... + 11720211.

It is an arithmetic number, because the mean of its divisors is an integer number (1568682654525).

Almost surely, 212131103210113 is an apocalyptic number.

It is an amenable number.

12131103210113 is a deficient number, since it is larger than the sum of its proper divisors (418358026087).

12131103210113 is a wasteful number, since it uses less digits than its factorization.

12131103210113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470771.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 12131103210113 its reverse (31101230113121), we get a palindrome (43232333323234).

The spelling of 12131103210113 in words is "twelve trillion, one hundred thirty-one billion, one hundred three million, two hundred ten thousand, one hundred thirteen".

Divisors: 1 29 385433 1085309 11177557 31473961 418313903797 12131103210113