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2020203143 = 71719978501
BaseRepresentation
bin111100001101001…
…1101101010000111
312012210100221201122
41320122131222013
513114133000033
6532243544155
7101030305040
oct17032355207
95183327648
102020203143
11947396582
1248468b05b
132626cc09a
141524378c7
15bc553a98
hex7869da87

2020203143 has 16 divisors (see below), whose sum is σ = 2446127424. Its totient is φ = 1628736000.

The previous prime is 2020203131. The next prime is 2020203193. The reversal of 2020203143 is 3413020202.

It is not a de Polignac number, because 2020203143 - 212 = 2020199047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020203103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233393 + ... + 241893.

It is an arithmetic number, because the mean of its divisors is an integer number (152882964).

Almost surely, 22020203143 is an apocalyptic number.

2020203143 is a deficient number, since it is larger than the sum of its proper divisors (425924281).

2020203143 is a wasteful number, since it uses less digits than its factorization.

2020203143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10522.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2020203143 is about 44946.6699878868. The cubic root of 2020203143 is about 1264.1492387664.

Adding to 2020203143 its reverse (3413020202), we get a palindrome (5433223345).

The spelling of 2020203143 in words is "two billion, twenty million, two hundred three thousand, one hundred forty-three".

Divisors: 1 7 17 119 1997 8501 13979 33949 59507 144517 237643 1011619 16976497 118835479 288600449 2020203143