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2130212231 = 72367118457
BaseRepresentation
bin111111011111000…
…0111010110000111
312111110100222211022
41332332013112013
513330313242411
6551213501355
7103534335200
oct17676072607
95443328738
102130212231
119a34a3a84
124b54a185b
1327c438614
14162cb25a7
15c7033edb
hex7ef87587

2130212231 has 12 divisors (see below), whose sum is σ = 2484775008. Its totient is φ = 1820905632.

The previous prime is 2130212221. The next prime is 2130212239. The reversal of 2130212231 is 1322120312.

It is not a de Polignac number, because 2130212231 - 26 = 2130212167 is a prime.

It is a super-2 number, since 2×21302122312 = 9075608298203994722, 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 (2130212239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41246 + ... + 77211.

It is an arithmetic number, because the mean of its divisors is an integer number (207064584).

Almost surely, 22130212231 is an apocalyptic number.

2130212231 is a deficient number, since it is larger than the sum of its proper divisors (354562777).

2130212231 is a wasteful number, since it uses less digits than its factorization.

2130212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118838 (or 118831 counting only the distinct ones).

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

The square root of 2130212231 is about 46154.2222445574. Note that the first 4 decimals coincide. The cubic root of 2130212231 is about 1286.6910832421.

Adding to 2130212231 its reverse (1322120312), we get a palindrome (3452332543).

It can be divided in two parts, 21302 and 12231, that added together give a palindrome (33533).

The spelling of 2130212231 in words is "two billion, one hundred thirty million, two hundred twelve thousand, two hundred thirty-one".

Divisors: 1 7 49 367 2569 17983 118457 829199 5804393 43473719 304316033 2130212231