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1230310312 = 237111997257
BaseRepresentation
bin100100101010101…
…0000101110101000
310011202001020110121
41021111100232220
510004424412222
6322025453024
742326315350
oct11125205650
93152036417
101230310312
11581529390
122a4041174
13167b7778a
14b957db60
15730265c7
hex49550ba8

1230310312 has 32 divisors (see below), whose sum is σ = 2876051520. Its totient is φ = 479341440.

The previous prime is 1230310309. The next prime is 1230310327. The reversal of 1230310312 is 2130130321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 998013 + ... + 999244.

It is an arithmetic number, because the mean of its divisors is an integer number (89876610).

Almost surely, 21230310312 is an apocalyptic number.

It is an amenable number.

1230310312 is an abundant number, since it is smaller than the sum of its proper divisors (1645741208).

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

1230310312 is a wasteful number, since it uses less digits than its factorization.

1230310312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997281 (or 1997277 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1230310312 is about 35075.7795636818. The cubic root of 1230310312 is about 1071.5313653892.

Adding to 1230310312 its reverse (2130130321), we get a palindrome (3360440633).

Subtracting 1230310312 from its reverse (2130130321), we obtain a square (899820009 = 299972).

The spelling of 1230310312 in words is "one billion, two hundred thirty million, three hundred ten thousand, three hundred twelve".

Divisors: 1 2 4 7 8 11 14 22 28 44 56 77 88 154 308 616 1997257 3994514 7989028 13980799 15978056 21969827 27961598 43939654 55923196 87879308 111846392 153788789 175758616 307577578 615155156 1230310312