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2131211210 = 25253983939
BaseRepresentation
bin111111100000111…
…1011001111001010
312111112020202011112
41333001323033022
513331042224320
6551251130322
7103545665522
oct17701731712
95445222145
102131211210
119a4016587
124b58a39a2
1327c6c822b
14163092682
15c717eec5
hex7f07b3ca

2131211210 has 16 divisors (see below), whose sum is σ = 3837736800. Its totient is φ = 852138576.

The previous prime is 2131211179. The next prime is 2131211233. The reversal of 2131211210 is 121121312.

It is a super-2 number, since 2×21312112102 = 9084122443259328200, which contains 22 as substring.

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, 16580 + ... + 67359.

It is an arithmetic number, because the mean of its divisors is an integer number (239858550).

Almost surely, 22131211210 is an apocalyptic number.

2131211210 is a deficient number, since it is larger than the sum of its proper divisors (1706525590).

2131211210 is a wasteful number, since it uses less digits than its factorization.

2131211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86485.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2131211210 is about 46165.0431603827. The cubic root of 2131211210 is about 1286.8921862865.

Adding to 2131211210 its reverse (121121312), we get a palindrome (2252332522).

The spelling of 2131211210 in words is "two billion, one hundred thirty-one million, two hundred eleven thousand, two hundred ten".

Divisors: 1 2 5 10 2539 5078 12695 25390 83939 167878 419695 839390 213121121 426242242 1065605605 2131211210