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2020220331 = 35471231091
BaseRepresentation
bin111100001101010…
…0001110110101011
312012210101211022020
41320122201312223
513114134022311
6532244155523
7101030406123
oct17032416653
95183354266
102020220331
119473a8488
12484698ba3
13262706b5c
1415243dc83
15bc558c06
hex786a1dab

2020220331 has 8 divisors (see below), whose sum is σ = 2698553664. Its totient is φ = 1344350280.

The previous prime is 2020220309. The next prime is 2020220351. The reversal of 2020220331 is 1330220202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2020220331 - 210 = 2020219307 is a prime.

It is a super-2 number, since 2×20202203312 = 8162580371571499122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2020220331.

It is not an unprimeable number, because it can be changed into a prime (2020220351) 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 7 ways as a sum of consecutive naturals, for example, 613905 + ... + 617186.

It is an arithmetic number, because the mean of its divisors is an integer number (337319208).

Almost surely, 22020220331 is an apocalyptic number.

2020220331 is a deficient number, since it is larger than the sum of its proper divisors (678333333).

2020220331 is a wasteful number, since it uses less digits than its factorization.

2020220331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231641.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2020220331 is about 44946.8611918563. The cubic root of 2020220331 is about 1264.1528239068.

Adding to 2020220331 its reverse (1330220202), we get a palindrome (3350440533).

The spelling of 2020220331 in words is "two billion, twenty million, two hundred twenty thousand, three hundred thirty-one".

Divisors: 1 3 547 1641 1231091 3693273 673406777 2020220331