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131321213011111 = 3071618926422657
BaseRepresentation
bin11101110110111110011010…
…010000001100010010100111
3122012222012000010101100200011
4131312332122100030102213
5114203031321012323421
61143144044334031051
736442434036045454
oct3566763220142247
9565865003340604
10131321213011111
1138930017231662
121288ab20648487
1358376ca4559b6
14245dda2b8882b
15102ae759954e1
hex776f9a40c4a7

131321213011111 has 8 divisors (see below), whose sum is σ = 131757112570160. Its totient is φ = 130885366330368.

The previous prime is 131321213011013. The next prime is 131321213011139. The reversal of 131321213011111 is 111110312123131.

It is a happy number.

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 131321213011111 - 239 = 130771457197223 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 (131321213011171) 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, 8241306 + ... + 18181351.

It is an arithmetic number, because the mean of its divisors is an integer number (16469639071270).

Almost surely, 2131321213011111 is an apocalyptic number.

131321213011111 is a deficient number, since it is larger than the sum of its proper divisors (435899559049).

131321213011111 is a wasteful number, since it uses less digits than its factorization.

131321213011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26439153.

The product of its (nonzero) digits is 108, while the sum is 22.

Adding to 131321213011111 its reverse (111110312123131), we get a palindrome (242431525134242).

The spelling of 131321213011111 in words is "one hundred thirty-one trillion, three hundred twenty-one billion, two hundred thirteen million, eleven thousand, one hundred eleven".

Divisors: 1 307 16189 4970023 26422657 8111755699 427756394173 131321213011111