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1200031230 = 23540001041
BaseRepresentation
bin100011110000111…
…0000010111111110
310002122001220101010
41013201300113332
54424201444410
6315024500050
741511045216
oct10741602776
93078056333
101200031230
11566428252
12295a7a626
13161805768
14b553b246
1570544c20
hex478705fe

1200031230 has 16 divisors (see below), whose sum is σ = 2880075024. Its totient is φ = 320008320.

The previous prime is 1200031193. The next prime is 1200031237. The reversal of 1200031230 is 321300021.

It is a happy number.

It is a super-3 number, since 3×12000312303 (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200031237) 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, 20000491 + ... + 20000550.

It is an arithmetic number, because the mean of its divisors is an integer number (180004689).

Almost surely, 21200031230 is an apocalyptic number.

1200031230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200031230 is an abundant number, since it is smaller than the sum of its proper divisors (1680043794).

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

1200031230 is a wasteful number, since it uses less digits than its factorization.

1200031230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40001051.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1200031230 is about 34641.4669146675. The cubic root of 1200031230 is about 1062.6677876657.

Adding to 1200031230 its reverse (321300021), we get a palindrome (1521331251).

The spelling of 1200031230 in words is "one billion, two hundred million, thirty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 40001041 80002082 120003123 200005205 240006246 400010410 600015615 1200031230