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3000311993 = 72107572251
BaseRepresentation
bin1011001011010101…
…0010000010111001
321202002121122022102
42302311102002321
522121034440433
61213415033145
7134231142200
oct26265220271
97662548272
103000311993
1112aa663898
126b896b7b5
1338a793553
14206688237
151286064e8
hexb2d520b9

3000311993 has 12 divisors (see below), whose sum is σ = 3522783312. Its totient is φ = 2547657000.

The previous prime is 3000311933. The next prime is 3000312001. The reversal of 3000311993 is 3991130003.

It is not a de Polignac number, because 3000311993 - 218 = 3000049849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3000311903) 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, 280883 + ... + 291368.

It is an arithmetic number, because the mean of its divisors is an integer number (293565276).

Almost surely, 23000311993 is an apocalyptic number.

It is an amenable number.

3000311993 is a deficient number, since it is larger than the sum of its proper divisors (522471319).

3000311993 is a wasteful number, since it uses less digits than its factorization.

3000311993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572372 (or 572365 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 29.

The square root of 3000311993 is about 54775.1037698698. The cubic root of 3000311993 is about 1442.2995654377.

Adding to 3000311993 its reverse (3991130003), we get a palindrome (6991441996).

The spelling of 3000311993 in words is "three billion, three hundred eleven thousand, nine hundred ninety-three".

Divisors: 1 7 49 107 749 5243 572251 4005757 28040299 61230857 428615999 3000311993