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520224131 = 7212783597
BaseRepresentation
bin11111000000011…
…111110110000011
31100020220010100102
4133000133312003
52031134133011
6123342113015
715614555300
oct3700376603
91306803312
10520224131
112477200a9
1212627b76b
1383a1653b
144d13c0a7
1530a1073b
hex1f01fd83

520224131 has 12 divisors (see below), whose sum is σ = 609931008. Its totient is φ = 442390032.

The previous prime is 520224121. The next prime is 520224139. The reversal of 520224131 is 131422025.

It is not a de Polignac number, because 520224131 - 210 = 520223107 is a prime.

It is a super-3 number, since 3×5202241313 (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520224139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35576 + ... + 48021.

It is an arithmetic number, because the mean of its divisors is an integer number (50827584).

Almost surely, 2520224131 is an apocalyptic number.

520224131 is a deficient number, since it is larger than the sum of its proper divisors (89706877).

520224131 is a wasteful number, since it uses less digits than its factorization.

520224131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83738 (or 83731 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 520224131 is about 22808.4223698177. The cubic root of 520224131 is about 804.2606696462.

Adding to 520224131 its reverse (131422025), we get a palindrome (651646156).

The spelling of 520224131 in words is "five hundred twenty million, two hundred twenty-four thousand, one hundred thirty-one".

Divisors: 1 7 49 127 889 6223 83597 585179 4096253 10616819 74317733 520224131