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1312122412113 = 331409197917431
BaseRepresentation
bin10011000110000000100…
…101110001110001010001
311122102211001210210102120
4103012000211301301101
5132444211314141423
62442440345004453
7163540421323632
oct23060045616121
94572731723376
101312122412113
114665169928a7
1219236b183729
139696a71ba66
144771554d889
15241e82c5ee3
hex13180971c51

1312122412113 has 32 divisors (see below), whose sum is σ = 1811366092800. Its totient is φ = 843985699200.

The previous prime is 1312122412091. The next prime is 1312122412129. The reversal of 1312122412113 is 3112142212131.

It is not a de Polignac number, because 1312122412113 - 28 = 1312122411857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312122412193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75266508 + ... + 75283938.

It is an arithmetic number, because the mean of its divisors is an integer number (56605190400).

Almost surely, 21312122412113 is an apocalyptic number.

It is an amenable number.

1312122412113 is a deficient number, since it is larger than the sum of its proper divisors (499243680687).

1312122412113 is a wasteful number, since it uses less digits than its factorization.

1312122412113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19853.

The product of its digits is 576, while the sum is 24.

Adding to 1312122412113 its reverse (3112142212131), we get a palindrome (4424264624244).

The spelling of 1312122412113 in words is "one trillion, three hundred twelve billion, one hundred twenty-two million, four hundred twelve thousand, one hundred thirteen".

Divisors: 1 3 31 93 409 1227 1979 5937 12679 17431 38037 52293 61349 184047 540361 809411 1621083 2428233 7129279 21387837 25091741 34495949 75275223 103487847 221007649 663022947 1069374419 3208123257 14108843141 42326529423 437374137371 1312122412113