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12310247 = 26945763
BaseRepresentation
bin101110111101…
…011011100111
3212011102111002
4232331123213
511122411442
61115503515
7206430635
oct56753347
925142432
1012310247
116a48964
124157b9b
132720291
1418c6355
151132732
hexbbd6e7

12310247 has 4 divisors (see below), whose sum is σ = 12356280. Its totient is φ = 12264216.

The previous prime is 12310229. The next prime is 12310253. The reversal of 12310247 is 74201321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74201321 = 312393591.

It is a cyclic number.

It is not a de Polignac number, because 12310247 - 216 = 12244711 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 (12310147) 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 3 ways as a sum of consecutive naturals, for example, 22613 + ... + 23150.

It is an arithmetic number, because the mean of its divisors is an integer number (3089070).

Almost surely, 212310247 is an apocalyptic number.

12310247 is a deficient number, since it is larger than the sum of its proper divisors (46033).

12310247 is an equidigital number, since it uses as much as digits as its factorization.

12310247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46032.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 12310247 is about 3508.5961580096. The cubic root of 12310247 is about 230.8991082556.

Adding to 12310247 its reverse (74201321), we get a palindrome (86511568).

It can be divided in two parts, 1231024 and 7, that multiplied together give a palindrome (8617168).

The spelling of 12310247 in words is "twelve million, three hundred ten thousand, two hundred forty-seven".

Divisors: 1 269 45763 12310247