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2020103121 = 310113075101
BaseRepresentation
bin111100001101000…
…0101001111010001
312012210011212112010
41320122011033101
513114121244441
6532241453133
7101026410321
oct17032051721
95183155463
102020103121
11947328413
124846411a9
132626956ba
1415240d281
15bc534116
hex786853d1

2020103121 has 16 divisors (see below), whose sum is σ = 2722753728. Its totient is φ = 1332120000.

The previous prime is 2020103093. The next prime is 2020103153. The reversal of 2020103121 is 1213010202.

It is not a de Polignac number, because 2020103121 - 27 = 2020102993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2020103097 and 2020103106.

It is not an unprimeable number, because it can be changed into a prime (2020103621) 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, 393471 + ... + 398571.

It is an arithmetic number, because the mean of its divisors is an integer number (170172108).

Almost surely, 22020103121 is an apocalyptic number.

It is an amenable number.

2020103121 is a deficient number, since it is larger than the sum of its proper divisors (702650607).

2020103121 is a wasteful number, since it uses less digits than its factorization.

2020103121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2020103121 is about 44945.5572999156. The cubic root of 2020103121 is about 1264.1283753824.

Adding to 2020103121 its reverse (1213010202), we get a palindrome (3233113323).

The spelling of 2020103121 in words is "two billion, twenty million, one hundred three thousand, one hundred twenty-one".

Divisors: 1 3 101 303 1307 3921 5101 15303 132007 396021 515201 1545603 6667007 20001021 673367707 2020103121