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2131032012 = 223434129907
BaseRepresentation
bin111111100000100…
…1111011111001100
312111111220122100120
41333001033133030
513331021011022
6551243224540
7103544321214
oct17701173714
95444818316
102131032012
119a3a0398a
124b5818150
1327c6647b5
14163047244
15c7146d5c
hex7f04f7cc

2131032012 has 24 divisors (see below), whose sum is σ = 5088046656. Its totient is φ = 693824208.

The previous prime is 2131031989. The next prime is 2131032047. The reversal of 2131032012 is 2102301312.

It is a junction number, because it is equal to n+sod(n) for n = 2131031982 and 2131032000.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2064438 + ... + 2065469.

It is an arithmetic number, because the mean of its divisors is an integer number (212001944).

Almost surely, 22131032012 is an apocalyptic number.

It is an amenable number.

2131032012 is an abundant number, since it is smaller than the sum of its proper divisors (2957014644).

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

2131032012 is a wasteful number, since it uses less digits than its factorization.

2131032012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129957 (or 4129955 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2131032012 is about 46163.1022787681. The cubic root of 2131032012 is about 1286.8561168176.

Adding to 2131032012 its reverse (2102301312), we get a palindrome (4233333324).

The spelling of 2131032012 in words is "two billion, one hundred thirty-one million, thirty-two thousand, twelve".

Divisors: 1 2 3 4 6 12 43 86 129 172 258 516 4129907 8259814 12389721 16519628 24779442 49558884 177586001 355172002 532758003 710344004 1065516006 2131032012