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2131102212 = 223570131151
BaseRepresentation
bin111111100000110…
…0000101000000100
312111112001012122120
41333001200220010
513331030232322
6551244525540
7103545032661
oct17701405004
95445035576
102131102212
119a3a516a8
124b58508b0
1327c68a735
14163064a68
15c715ca5c
hex7f060a04

2131102212 has 24 divisors (see below), whose sum is σ = 4973603712. Its totient is φ = 710220000.

The previous prime is 2131102199. The next prime is 2131102229. The reversal of 2131102212 is 2122011312.

It is a junction number, because it is equal to n+sod(n) for n = 2131102191 and 2131102200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52837 + ... + 83987.

It is an arithmetic number, because the mean of its divisors is an integer number (207233488).

Almost surely, 22131102212 is an apocalyptic number.

It is an amenable number.

2131102212 is an abundant number, since it is smaller than the sum of its proper divisors (2842501500).

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

2131102212 is a wasteful number, since it uses less digits than its factorization.

2131102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36859 (or 36857 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2131102212 is about 46163.8626200191. The cubic root of 2131102212 is about 1286.8702471086.

Adding to 2131102212 its reverse (2122011312), we get a palindrome (4253113524).

The spelling of 2131102212 in words is "two billion, one hundred thirty-one million, one hundred two thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 5701 11402 17103 22804 31151 34206 62302 68412 93453 124604 186906 373812 177591851 355183702 532775553 710367404 1065551106 2131102212