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3130003220 = 225156500161
BaseRepresentation
bin1011101010010000…
…0000111100010100
322002010122122020012
42322210000330110
522402240100340
61234330455352
7140364405551
oct27244007424
98063578205
103130003220
111366894823
12734294558
133ab601616
142199a7a28
15134bc3565
hexba900f14

3130003220 has 12 divisors (see below), whose sum is σ = 6573006804. Its totient is φ = 1252001280.

The previous prime is 3130003199. The next prime is 3130003249. The reversal of 3130003220 is 223000313.

It can be written as a sum of positive squares in 2 ways, for example, as 567011344 + 2562991876 = 23812^2 + 50626^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3130003195 and 3130003204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78250061 + ... + 78250100.

It is an arithmetic number, because the mean of its divisors is an integer number (547750567).

Almost surely, 23130003220 is an apocalyptic number.

It is an amenable number.

3130003220 is an abundant number, since it is smaller than the sum of its proper divisors (3443003584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3130003220 is a wasteful number, since it uses less digits than its factorization.

3130003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156500170 (or 156500168 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 3130003220 is about 55946.4317003328. The cubic root of 3130003220 is about 1462.7886932951.

Adding to 3130003220 its reverse (223000313), we get a palindrome (3353003533).

The spelling of 3130003220 in words is "three billion, one hundred thirty million, three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 156500161 313000322 626000644 782500805 1565001610 3130003220