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10100313220 = 225505015661
BaseRepresentation
bin10010110100000011…
…01000110010000100
3222001220112001222211
421122001220302010
5131141140010340
64350124433204
7505203150214
oct113201506204
928056461884
1010100313220
1143133aa8a8
121b5a6a8804
13c4c7106ca
146bb5d6244
153e1ac55ea
hex25a068c84

10100313220 has 12 divisors (see below), whose sum is σ = 21210657804. Its totient is φ = 4040125280.

The previous prime is 10100313193. The next prime is 10100313221. The reversal of 10100313220 is 2231300101.

It can be written as a sum of positive squares in 2 ways, for example, as 4561381444 + 5538931776 = 67538^2 + 74424^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10100313220.

It is not an unprimeable number, because it can be changed into a prime (10100313221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252507811 + ... + 252507850.

It is an arithmetic number, because the mean of its divisors is an integer number (1767554817).

Almost surely, 210100313220 is an apocalyptic number.

10100313220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10100313220 is an abundant number, since it is smaller than the sum of its proper divisors (11110344584).

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

10100313220 is a wasteful number, since it uses less digits than its factorization.

10100313220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505015670 (or 505015668 counting only the distinct ones).

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

Adding to 10100313220 its reverse (2231300101), we get a palindrome (12331613321).

The spelling of 10100313220 in words is "ten billion, one hundred million, three hundred thirteen thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 505015661 1010031322 2020062644 2525078305 5050156610 10100313220