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131020302011 = 199771090777
BaseRepresentation
bin111101000000101101…
…0110010011010111011
3110112012000210221212012
41322001122302122323
54121312144131021
6140105003440135
712315543122534
oct1720132623273
9415160727765
10131020302011
11506245aa135
122148652604b
13c48039c731
1464acbbd68b
15361c70535b
hex1e816b26bb

131020302011 has 8 divisors (see below), whose sum is σ = 139337924880. Its totient is φ = 122844860928.

The previous prime is 131020301999. The next prime is 131020302019. The reversal of 131020302011 is 110203020131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131020302011 - 26 = 131020301947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131020302019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35543546 + ... + 35547231.

It is an arithmetic number, because the mean of its divisors is an integer number (17417240610).

Almost surely, 2131020302011 is an apocalyptic number.

131020302011 is a deficient number, since it is larger than the sum of its proper divisors (8317622869).

131020302011 is an equidigital number, since it uses as much as digits as its factorization.

131020302011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71090893.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 131020302011 its reverse (110203020131), we get a palindrome (241223322142).

The spelling of 131020302011 in words is "one hundred thirty-one billion, twenty million, three hundred two thousand, eleven".

Divisors: 1 19 97 1843 71090777 1350724763 6895805369 131020302011