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12215350131 = 319920461223
BaseRepresentation
bin10110110000001011…
…10111001101110011
31011112022100002012020
423120011313031303
5200004112201011
65340041202523
7611464522455
oct133005671563
934468302166
1012215350131
1151a9279396
12244aa90443
1311c896493a
1483c4782d5
154b760d006
hex2d8177373

12215350131 has 8 divisors (see below), whose sum is σ = 16368979200. Its totient is φ = 8102643912.

The previous prime is 12215350127. The next prime is 12215350139. The reversal of 12215350131 is 13105351221.

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

It is not a de Polignac number, because 12215350131 - 22 = 12215350127 is a prime.

It is a super-2 number, since 2×122153501312 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12215350139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10230015 + ... + 10231208.

It is an arithmetic number, because the mean of its divisors is an integer number (2046122400).

Almost surely, 212215350131 is an apocalyptic number.

12215350131 is a deficient number, since it is larger than the sum of its proper divisors (4153629069).

12215350131 is a wasteful number, since it uses less digits than its factorization.

12215350131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20461425.

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 12215350131 in words is "twelve billion, two hundred fifteen million, three hundred fifty thousand, one hundred thirty-one".

Divisors: 1 3 199 597 20461223 61383669 4071783377 12215350131