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131112331230211 = 613213886347847
BaseRepresentation
bin11101110011111011110111…
…111011011011110000000011
3122012020012211210110110021121
4131303323313323123300003
5114141121023243331321
61142504101244333111
736421360536153502
oct3563736773336003
9565205753413247
10131112331230211
113885a477984a71
1212856546544197
135820abc008986
142453c29266839
1510257ec8e7441
hex773ef7edbc03

131112331230211 has 4 divisors (see below), whose sum is σ = 131326217578672. Its totient is φ = 130898444881752.

The previous prime is 131112331230191. The next prime is 131112331230259. The reversal of 131112331230211 is 112032133211131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131112331230211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131112331230271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106943173311 + ... + 106943174536.

It is an arithmetic number, because the mean of its divisors is an integer number (32831554394668).

Almost surely, 2131112331230211 is an apocalyptic number.

131112331230211 is a deficient number, since it is larger than the sum of its proper divisors (213886348461).

131112331230211 is an equidigital number, since it uses as much as digits as its factorization.

131112331230211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213886348460.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 131112331230211 its reverse (112032133211131), we get a palindrome (243144464441342).

The spelling of 131112331230211 in words is "one hundred thirty-one trillion, one hundred twelve billion, three hundred thirty-one million, two hundred thirty thousand, two hundred eleven".

Divisors: 1 613 213886347847 131112331230211