Search a number
-
+
312102123102133 = 721316571019329009
BaseRepresentation
bin100011011110110101111000…
…0001011100101111110110101
31111221001200010120122210111121
41012331223300023211332311
5311401440122003232013
63023441422550503541
7122511430362524200
oct10675536013457665
91457050116583447
10312102123102133
1190499849007491
122b007595664bb1
131051c147420390
14570db75416937
15261375c09658d
hex11bdaf02e5fb5

312102123102133 has 48 divisors (see below), whose sum is σ = 391272905766960. Its totient is φ = 246756198334464.

The previous prime is 312102123102127. The next prime is 312102123102199. The reversal of 312102123102133 is 331201321201213.

It can be written as a sum of positive squares in 8 ways, for example, as 45060703776529 + 267041419325604 = 6712727^2 + 16341402^2 .

It is a de Polignac number, because none of the positive numbers 2k-312102123102133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312102123102098 and 312102123102107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312102123102103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10758788733 + ... + 10758817741.

It is an arithmetic number, because the mean of its divisors is an integer number (8151518870145).

Almost surely, 2312102123102133 is an apocalyptic number.

It is an amenable number.

312102123102133 is a deficient number, since it is larger than the sum of its proper divisors (79170782664827).

312102123102133 is a wasteful number, since it uses less digits than its factorization.

312102123102133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40886 (or 40879 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 312102123102133 its reverse (331201321201213), we get a palindrome (643303444303346).

The spelling of 312102123102133 in words is "three hundred twelve trillion, one hundred two billion, one hundred twenty-three million, one hundred two thousand, one hundred thirty-three".

Divisors: 1 7 13 49 91 637 1657 10193 11599 21541 29009 71351 81193 132509 150787 203063 377117 499457 927563 1055509 1421441 2639819 6492941 16889801 18478733 48067913 118228607 219567413 295688737 336475391 624882869 827600249 1536971891 2069821159 2355327737 3843953581 4374180083 10758803237 14488748113 26907675067 30619260581 188353725469 489956237209 3429693660463 6369431083717 24007855623241 44586017586019 312102123102133