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131202230013 = 32196711451709
BaseRepresentation
bin111101000110001000…
…0110010011011111101
3110112122201010212011100
41322030100302123331
54122200232330023
6140135023043313
712323212361061
oct1721420623375
9415581125140
10131202230013
1150708269358
1221517440539
13c4abc9a03a
1464c9019aa1
15362d68ec43
hex1e8c4326fd

131202230013 has 24 divisors (see below), whose sum is σ = 202466232800. Its totient is φ = 81627774624.

The previous prime is 131202230011. The next prime is 131202230039. The reversal of 131202230013 is 310032202131.

It is not a de Polignac number, because 131202230013 - 21 = 131202230011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131202230011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5714398 + ... + 5737311.

Almost surely, 2131202230013 is an apocalyptic number.

It is an amenable number.

131202230013 is a deficient number, since it is larger than the sum of its proper divisors (71264002787).

131202230013 is a wasteful number, since it uses less digits than its factorization.

131202230013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11451801 (or 11451798 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 131202230013 its reverse (310032202131), we get a palindrome (441234432144).

The spelling of 131202230013 in words is "one hundred thirty-one billion, two hundred two million, two hundred thirty thousand, thirteen".

Divisors: 1 3 9 19 57 67 171 201 603 1273 3819 11457 11451709 34355127 103065381 217582471 652747413 767264503 1958242239 2301793509 6905380527 14578025557 43734076671 131202230013