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1230431244 = 223761240131
BaseRepresentation
bin100100101010110…
…1110010000001100
310011202021101100120
41021111232100030
510004442244434
6322032224540
742330331050
oct11125562014
93152241316
101230431244
11581601229
122a409b150
13167bba833
14b95b1c60
157304c349
hex4956e40c

1230431244 has 48 divisors (see below), whose sum is σ = 3334953216. Its totient is φ = 345787200.

The previous prime is 1230431233. The next prime is 1230431249. The reversal of 1230431244 is 4421340321.

It is a super-2 number, since 2×12304312442 = 3027922092422775072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1230431249) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 114942 + ... + 125189.

It is an arithmetic number, because the mean of its divisors is an integer number (69478192).

Almost surely, 21230431244 is an apocalyptic number.

1230431244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1230431244 is an abundant number, since it is smaller than the sum of its proper divisors (2104521972).

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

1230431244 is a wasteful number, since it uses less digits than its factorization.

1230431244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240206 (or 240204 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1230431244 is about 35077.5033889244. The cubic root of 1230431244 is about 1071.5664725716.

Adding to 1230431244 its reverse (4421340321), we get a palindrome (5651771565).

The spelling of 1230431244 in words is "one billion, two hundred thirty million, four hundred thirty-one thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 61 84 122 183 244 366 427 732 854 1281 1708 2562 5124 240131 480262 720393 960524 1440786 1680917 2881572 3361834 5042751 6723668 10085502 14647991 20171004 29295982 43943973 58591964 87887946 102535937 175775892 205071874 307607811 410143748 615215622 1230431244