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2020011131 = 7128450861
BaseRepresentation
bin111100001100110…
…1110110001111011
312012210000012100002
41320121232301323
513114110324011
6532235503215
7101025545165
oct17031566173
95183005302
102020011131
11947275296
124845b7b0b
13262662878
141523c7935
15bc516c3b
hex7866ec7b

2020011131 has 4 divisors (see below), whose sum is σ = 2048462064. Its totient is φ = 1991560200.

The previous prime is 2020011121. The next prime is 2020011137. The reversal of 2020011131 is 1311100202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311100202 = 2655550101.

It is a cyclic number.

It is not a de Polignac number, because 2020011131 - 26 = 2020011067 is a prime.

It is a super-2 number, since 2×20200111312 = 8160889938727798322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020011137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14225360 + ... + 14225501.

It is an arithmetic number, because the mean of its divisors is an integer number (512115516).

Almost surely, 22020011131 is an apocalyptic number.

2020011131 is a deficient number, since it is larger than the sum of its proper divisors (28450933).

2020011131 is an equidigital number, since it uses as much as digits as its factorization.

2020011131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28450932.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2020011131 is about 44944.5339390676. The cubic root of 2020011131 is about 1264.1091867688.

Adding to 2020011131 its reverse (1311100202), we get a palindrome (3331111333).

The spelling of 2020011131 in words is "two billion, twenty million, eleven thousand, one hundred thirty-one".

Divisors: 1 71 28450861 2020011131