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12314881 = 73168697
BaseRepresentation
bin101110111110…
…100100000001
3212011122211201
4232332210001
511123034011
61115541201
7206450305
oct56764401
925148751
1012314881
116a51397
12415a801
132722417
1418c7d05
151133cc1
hexbbe901

12314881 has 4 divisors (see below), whose sum is σ = 12483652. Its totient is φ = 12146112.

The previous prime is 12314873. The next prime is 12314891. The reversal of 12314881 is 18841321.

12314881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18841321 = 171108313.

It can be written as a sum of positive squares in 2 ways, for example, as 8071281 + 4243600 = 2841^2 + 2060^2 .

It is a cyclic number.

It is not a de Polignac number, because 12314881 - 23 = 12314873 is a prime.

It is a super-2 number, since 2×123148812 = 303312588088322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12314891) 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, 84276 + ... + 84421.

It is an arithmetic number, because the mean of its divisors is an integer number (3120913).

Almost surely, 212314881 is an apocalyptic number.

It is an amenable number.

12314881 is a deficient number, since it is larger than the sum of its proper divisors (168771).

12314881 is an equidigital number, since it uses as much as digits as its factorization.

12314881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168770.

The product of its digits is 1536, while the sum is 28.

The square root of 12314881 is about 3509.2564739557. The cubic root of 12314881 is about 230.9280774072.

The spelling of 12314881 in words is "twelve million, three hundred fourteen thousand, eight hundred eighty-one".

Divisors: 1 73 168697 12314881