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12313201 = 47261983
BaseRepresentation
bin101110111110…
…001001110001
3212011120112111
4232332021301
511123010301
61115525321
7206442355
oct56761161
925146474
1012313201
116a500aa
124159841
132721724
1418c7465
151133551
hexbbe271

12313201 has 4 divisors (see below), whose sum is σ = 12575232. Its totient is φ = 12051172.

The previous prime is 12313187. The next prime is 12313229. The reversal of 12313201 is 10231321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10231321 = 88311587.

It is a cyclic number.

It is not a de Polignac number, because 12313201 - 29 = 12312689 is a prime.

It is a super-2 number, since 2×123132012 = 303229837732802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12313261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130945 + ... + 131038.

It is an arithmetic number, because the mean of its divisors is an integer number (3143808).

Almost surely, 212313201 is an apocalyptic number.

It is an amenable number.

12313201 is a deficient number, since it is larger than the sum of its proper divisors (262031).

12313201 is an equidigital number, since it uses as much as digits as its factorization.

12313201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262030.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12313201 is about 3509.0170988469. The cubic root of 12313201 is about 230.9175758356.

Adding to 12313201 its reverse (10231321), we get a palindrome (22544522).

It can be divided in two parts, 1231320 and 1, that added together give a palindrome (1231321).

The spelling of 12313201 in words is "twelve million, three hundred thirteen thousand, two hundred one".

Divisors: 1 47 261983 12313201