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1313010220 = 22571939127
BaseRepresentation
bin100111001000010…
…1111001000101100
310101111122211102011
41032100233020230
510142112311340
6334142211004
744352255064
oct11620571054
93344584364
101313010220
11614184015
12307883a64
1317c041a32
14c654a3a4
157a4100ea
hex4e42f22c

1313010220 has 24 divisors (see below), whose sum is σ = 2758006944. Its totient is φ = 525073536.

The previous prime is 1313010211. The next prime is 1313010233. The reversal of 1313010220 is 220103131.

It is a self number, because there is not a number n which added to its sum of digits gives 1313010220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139297 + ... + 148423.

It is an arithmetic number, because the mean of its divisors is an integer number (114916956).

Almost surely, 21313010220 is an apocalyptic number.

1313010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313010220 is an abundant number, since it is smaller than the sum of its proper divisors (1444996724).

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

1313010220 is a wasteful number, since it uses less digits than its factorization.

1313010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16329 (or 16327 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1313010220 is about 36235.4828862539. The cubic root of 1313010220 is about 1095.0216407669.

Adding to 1313010220 its reverse (220103131), we get a palindrome (1533113351).

The spelling of 1313010220 in words is "one billion, three hundred thirteen million, ten thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 7193 9127 14386 18254 28772 35965 36508 45635 71930 91270 143860 182540 65650511 131301022 262602044 328252555 656505110 1313010220