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1230430105 = 5246086021
BaseRepresentation
bin100100101010110…
…1101111110011001
310011202021022210101
41021111231332121
510004442230410
6322032215401
742330324532
oct11125557631
93152238711
101230430105
11581600393
122a409a561
13167bba168
14b95b1689
157304bd3a
hex4956df99

1230430105 has 4 divisors (see below), whose sum is σ = 1476516132. Its totient is φ = 984344080.

The previous prime is 1230430099. The next prime is 1230430109. The reversal of 1230430105 is 5010340321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 453860416 + 776569689 = 21304^2 + 27867^2 .

It is a de Polignac number, because none of the positive numbers 2k-1230430105 is a prime.

It is a super-2 number, since 2×12304301052 = 3027916486580622050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230430109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123043006 + ... + 123043015.

It is an arithmetic number, because the mean of its divisors is an integer number (369129033).

Almost surely, 21230430105 is an apocalyptic number.

It is an amenable number.

1230430105 is a deficient number, since it is larger than the sum of its proper divisors (246086027).

1230430105 is an equidigital number, since it uses as much as digits as its factorization.

1230430105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246086026.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1230430105 is about 35077.4871534436. The cubic root of 1230430105 is about 1071.5661419247.

Adding to 1230430105 its reverse (5010340321), we get a palindrome (6240770426).

The spelling of 1230430105 in words is "one billion, two hundred thirty million, four hundred thirty thousand, one hundred five".

Divisors: 1 5 246086021 1230430105