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12310302271 = 35839343489
BaseRepresentation
bin10110111011100000…
…00100111000111111
31011202221000011001011
423131300010320333
5200202414133041
65353312300051
7614026562041
oct133560047077
934687004034
1012310302271
115247932333
122476841627
13121252b937
1484ad13a91
154c0b16e81
hex2ddc04e3f

12310302271 has 4 divisors (see below), whose sum is σ = 12310681600. Its totient is φ = 12309922944.

The previous prime is 12310302241. The next prime is 12310302311. The reversal of 12310302271 is 17220301321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17220301321 = 31555493591.

It is a cyclic number.

It is not a de Polignac number, because 12310302271 - 217 = 12310171199 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 (12310302211) 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 3 ways as a sum of consecutive naturals, for example, 135906 + ... + 207583.

It is an arithmetic number, because the mean of its divisors is an integer number (3077670400).

Almost surely, 212310302271 is an apocalyptic number.

12310302271 is a deficient number, since it is larger than the sum of its proper divisors (379329).

12310302271 is an equidigital number, since it uses as much as digits as its factorization.

12310302271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379328.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 12310302271 its reverse (17220301321), we get a palindrome (29530603592).

The spelling of 12310302271 in words is "twelve billion, three hundred ten million, three hundred two thousand, two hundred seventy-one".

Divisors: 1 35839 343489 12310302271