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131211230301 = 3231745990617
BaseRepresentation
bin111101000110011001…
…1000111110001011101
3110112200100002010020100
41322030303013301131
54122210033332201
6140135544011313
712323352025014
oct1721463076135
9415610063210
10131211230301
1150712356408
122151a460b39
13c4b0acb858
1464ca2bda7b
15362e36b886
hex1e8ccc7c5d

131211230301 has 12 divisors (see below), whose sum is σ = 190125214812. Its totient is φ = 87198207936.

The previous prime is 131211230291. The next prime is 131211230327. The reversal of 131211230301 is 103032112131.

131211230301 is a `hidden beast` number, since 13 + 121 + 1 + 230 + 301 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 36438992100 + 94772238201 = 190890^2 + 307851^2 .

It is not a de Polignac number, because 131211230301 - 27 = 131211230173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131211230201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22992456 + ... + 22998161.

It is an arithmetic number, because the mean of its divisors is an integer number (15843767901).

Almost surely, 2131211230301 is an apocalyptic number.

It is an amenable number.

131211230301 is a deficient number, since it is larger than the sum of its proper divisors (58913984511).

131211230301 is a wasteful number, since it uses less digits than its factorization.

131211230301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45990940 (or 45990937 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 131211230301 its reverse (103032112131), we get a palindrome (234243342432).

The spelling of 131211230301 in words is "one hundred thirty-one billion, two hundred eleven million, two hundred thirty thousand, three hundred one".

Divisors: 1 3 9 317 951 2853 45990617 137971851 413915553 14579025589 43737076767 131211230301