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20033312223 = 318136893761
BaseRepresentation
bin10010101010000101…
…000001010111011111
31220201011012201000210
4102222011001113133
5312012011442343
613111515223503
71306305226041
oct225205012737
956634181023
1020033312223
118550311a91
123a71147b93
131b7356c402
14d808b7a91
157c3b4b333
hex4aa1415df

20033312223 has 8 divisors (see below), whose sum is σ = 26858658736. Its totient is φ = 13281753600.

The previous prime is 20033312209. The next prime is 20033312281. The reversal of 20033312223 is 32221333002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20033312223 - 25 = 20033312191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20033312223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033312203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18446338 + ... + 18447423.

It is an arithmetic number, because the mean of its divisors is an integer number (3357332342).

Almost surely, 220033312223 is an apocalyptic number.

20033312223 is a deficient number, since it is larger than the sum of its proper divisors (6825346513).

20033312223 is a wasteful number, since it uses less digits than its factorization.

20033312223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36893945.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20033312223 its reverse (32221333002), we get a palindrome (52254645225).

The spelling of 20033312223 in words is "twenty billion, thirty-three million, three hundred twelve thousand, two hundred twenty-three".

Divisors: 1 3 181 543 36893761 110681283 6677770741 20033312223