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2123230355 = 5618578123
BaseRepresentation
bin111111010001101…
…1110110010010011
312110222020021111022
41332203132302103
513322021332410
6550404110055
7103421105651
oct17643366223
95428207438
102123230355
1199a565434
124b309532b
1327ab6272c
14161db5dd1
15c6605455
hex7e8dec93

2123230355 has 16 divisors (see below), whose sum is σ = 2592985824. Its totient is φ = 1668583680.

The previous prime is 2123230313. The next prime is 2123230357. The reversal of 2123230355 is 5530323212.

It is not a de Polignac number, because 2123230355 - 228 = 1854794899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123230357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257324 + ... + 265446.

It is an arithmetic number, because the mean of its divisors is an integer number (162061614).

Almost surely, 22123230355 is an apocalyptic number.

2123230355 is a deficient number, since it is larger than the sum of its proper divisors (469755469).

2123230355 is an equidigital number, since it uses as much as digits as its factorization.

2123230355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9046.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 2123230355 is about 46078.5237936286. The cubic root of 2123230355 is about 1285.2838134227.

Adding to 2123230355 its reverse (5530323212), we get a palindrome (7653553567).

The spelling of 2123230355 in words is "two billion, one hundred twenty-three million, two hundred thirty thousand, three hundred fifty-five".

Divisors: 1 5 61 305 857 4285 8123 40615 52277 261385 495503 2477515 6961411 34807055 424646071 2123230355