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2131203130 = 257171979091
BaseRepresentation
bin111111100000111…
…1001010000111010
312111112020100002021
41333001321100322
513331042000010
6551251025054
7103545633130
oct17701712072
95445210067
102131203130
119a4010501
124b589b18a
1327c6c4654
1416308d750
15c717c8da
hex7f07943a

2131203130 has 64 divisors (see below), whose sum is σ = 4666159872. Its totient is φ = 684149760.

The previous prime is 2131203091. The next prime is 2131203149. The reversal of 2131203130 is 313021312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229885 + ... + 238975.

It is an arithmetic number, because the mean of its divisors is an integer number (72908748).

Almost surely, 22131203130 is an apocalyptic number.

2131203130 is an abundant number, since it is smaller than the sum of its proper divisors (2534956742).

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

2131203130 is a wasteful number, since it uses less digits than its factorization.

2131203130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9319.

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

The square root of 2131203130 is about 46164.9556481970. The cubic root of 2131203130 is about 1286.8905599653.

Adding to 2131203130 its reverse (313021312), we get a palindrome (2444224442).

The spelling of 2131203130 in words is "two billion, one hundred thirty-one million, two hundred three thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 17 34 35 70 85 119 170 197 238 394 595 985 1190 1379 1970 2758 3349 6698 6895 9091 13790 16745 18182 23443 33490 45455 46886 63637 90910 117215 127274 154547 234430 309094 318185 636370 772735 1081829 1545470 1790927 2163658 3581854 5409145 8954635 10818290 12536489 17909270 25072978 30445759 60891518 62682445 125364890 152228795 213120313 304457590 426240626 1065601565 2131203130