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12303312131 = 111765793113
BaseRepresentation
bin10110111010101010…
…11010010100000011
31011202102212000101002
423131111122110003
5200144121442011
65352502402215
7613613266445
oct133525322403
934672760332
1012303312131
115243998560
12247443036b
131210c52066
1484a014495
154c01d5c3b
hex2dd55a503

12303312131 has 8 divisors (see below), whose sum is σ = 14211312624. Its totient is φ = 10526897920.

The previous prime is 12303312121. The next prime is 12303312137. The reversal of 12303312131 is 13121330321.

12303312131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12303312131 - 222 = 12299117827 is a prime.

It is a super-2 number, since 2×123033121312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12303312137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32896370 + ... + 32896743.

It is an arithmetic number, because the mean of its divisors is an integer number (1776414078).

Almost surely, 212303312131 is an apocalyptic number.

12303312131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12303312131 is a deficient number, since it is larger than the sum of its proper divisors (1908000493).

12303312131 is a wasteful number, since it uses less digits than its factorization.

12303312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65793141.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12303312131 its reverse (13121330321), we get a palindrome (25424642452).

The spelling of 12303312131 in words is "twelve billion, three hundred three million, three hundred twelve thousand, one hundred thirty-one".

Divisors: 1 11 17 187 65793113 723724243 1118482921 12303312131