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2020331331 = 32476177741
BaseRepresentation
bin111100001101011…
…1100111101000011
312012210121110120100
41320122330331003
513114201100311
6532250413443
7101031350544
oct17032747503
95183543510
102020331331
11947473917
12484731283
13262745535
1415246c4cb
15bc57ba56
hex786bcf43

2020331331 has 24 divisors (see below), whose sum is σ = 2985562944. Its totient is φ = 1315923840.

The previous prime is 2020331311. The next prime is 2020331347. The reversal of 2020331331 is 1331330202.

2020331331 is a `hidden beast` number, since 2 + 0 + 2 + 0 + 331 + 331 = 666.

It is not a de Polignac number, because 2020331331 - 213 = 2020323139 is a prime.

It is a super-2 number, since 2×20203313312 = 8163477374040463122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2020331311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257121 + ... + 264861.

It is an arithmetic number, because the mean of its divisors is an integer number (124398456).

Almost surely, 22020331331 is an apocalyptic number.

2020331331 is a deficient number, since it is larger than the sum of its proper divisors (965231613).

2020331331 is a wasteful number, since it uses less digits than its factorization.

2020331331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8411 (or 8408 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 2020331331 is about 44948.0959663477. The cubic root of 2020331331 is about 1264.1759762319.

Adding to 2020331331 its reverse (1331330202), we get a palindrome (3351661533).

The spelling of 2020331331 in words is "two billion, twenty million, three hundred thirty-one thousand, three hundred thirty-one".

Divisors: 1 3 9 47 141 423 617 1851 5553 7741 23223 28999 69669 86997 260991 363827 1091481 3274443 4776197 14328591 42985773 224481259 673443777 2020331331