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201212130131 = 7954718472521
BaseRepresentation
bin1011101101100100101…
…1010111001101010011
3201020100211010021102222
42323121023113031103
511244040301131011
6232234030131255
720352136613045
oct2733113271523
9636324107388
10201212130131
1178374002541
1232bb5650b2b
1315c8849c93c
149a4b08ba95
155379aa8ddb
hex2ed92d7353

201212130131 has 16 divisors (see below), whose sum is σ = 204323159040. Its totient is φ = 198115968960.

The previous prime is 201212130083. The next prime is 201212130173. The reversal of 201212130131 is 131031212102.

It is a cyclic number.

It is not a de Polignac number, because 201212130131 - 226 = 201145021267 is a prime.

It is a super-2 number, since 2×2012121301312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201212130731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79813151 + ... + 79815671.

It is an arithmetic number, because the mean of its divisors is an integer number (12770197440).

Almost surely, 2201212130131 is an apocalyptic number.

201212130131 is a deficient number, since it is larger than the sum of its proper divisors (3111028909).

201212130131 is a wasteful number, since it uses less digits than its factorization.

201212130131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4994.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 201212130131 its reverse (131031212102), we get a palindrome (332243342233).

The spelling of 201212130131 in words is "two hundred one billion, two hundred twelve million, one hundred thirty thousand, one hundred thirty-one".

Divisors: 1 79 547 1847 2521 43213 145913 199159 1010309 1378987 4656287 79814411 108939973 367846673 2546988989 201212130131