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2103122231 = 72315783203
BaseRepresentation
bin111110101011011…
…0001100100110111
312102120101200022222
41331112301210313
513301344402411
6544405112555
7103055146460
oct17526614467
95376350288
102103122231
1198a180951
124a83b875b
13276942032
1415d45dd67
15c49824db
hex7d5b1937

2103122231 has 16 divisors (see below), whose sum is σ = 2524076544. Its totient is φ = 1713295584.

The previous prime is 2103122167. The next prime is 2103122239. The reversal of 2103122231 is 1322213012.

It is not a de Polignac number, because 2103122231 - 26 = 2103122167 is a prime.

It is a super-2 number, since 2×21031222312 = 8846246237052834722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103122239) 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, 16325 + ... + 66878.

It is an arithmetic number, because the mean of its divisors is an integer number (157754784).

Almost surely, 22103122231 is an apocalyptic number.

2103122231 is a deficient number, since it is larger than the sum of its proper divisors (420954313).

2103122231 is a wasteful number, since it uses less digits than its factorization.

2103122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83390.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2103122231 is about 45859.8106297878. The cubic root of 2103122231 is about 1281.2134957960.

Adding to 2103122231 its reverse (1322213012), we get a palindrome (3425335243).

The spelling of 2103122231 in words is "two billion, one hundred three million, one hundred twenty-two thousand, two hundred thirty-one".

Divisors: 1 7 23 157 161 1099 3611 25277 83203 582421 1913669 13062871 13395683 91440097 300446033 2103122231