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2020343213 = 7288620459
BaseRepresentation
bin111100001101011…
…1111110110101101
312012210122001212102
41320122333312231
513114201440323
6532250544445
7101031430310
oct17032776655
95183561772
102020343213
11947481839
12484738125
1326274aa75
14152472977
15bc580328
hex786bfdad

2020343213 has 4 divisors (see below), whose sum is σ = 2308963680. Its totient is φ = 1731722748.

The previous prime is 2020343209. The next prime is 2020343263. The reversal of 2020343213 is 3123430202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3123430202 = 21561715101.

It is not a de Polignac number, because 2020343213 - 22 = 2020343209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020343263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144310223 + ... + 144310236.

It is an arithmetic number, because the mean of its divisors is an integer number (577240920).

Almost surely, 22020343213 is an apocalyptic number.

It is an amenable number.

2020343213 is a deficient number, since it is larger than the sum of its proper divisors (288620467).

2020343213 is an equidigital number, since it uses as much as digits as its factorization.

2020343213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288620466.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 2020343213 is about 44948.2281408289. The cubic root of 2020343213 is about 1264.1784545233.

Adding to 2020343213 its reverse (3123430202), we get a palindrome (5143773415).

The spelling of 2020343213 in words is "two billion, twenty million, three hundred forty-three thousand, two hundred thirteen".

Divisors: 1 7 288620459 2020343213