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12061513 = 31138783
BaseRepresentation
bin101110000000…
…101101001001
3211200210021201
4232000231021
511041432023
61110304201
7204343522
oct56005511
924623251
1012061513
116898aa2
124058061
132663cb9
14185d849
1510d3bad
hexb80b49

12061513 has 4 divisors (see below), whose sum is σ = 12100608. Its totient is φ = 12022420.

The previous prime is 12061501. The next prime is 12061531. The reversal of 12061513 is 31516021.

Adding to 12061513 its reverse (31516021), we get a palindrome (43577534).

12061513 is digitally balanced in base 3, 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12061513 - 25 = 12061481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12061583) 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, 19081 + ... + 19702.

It is an arithmetic number, because the mean of its divisors is an integer number (3025152).

Almost surely, 212061513 is an apocalyptic number.

It is an amenable number.

12061513 is a deficient number, since it is larger than the sum of its proper divisors (39095).

12061513 is an equidigital number, since it uses as much as digits as its factorization.

12061513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39094.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12061513 is about 3472.9689028265. The cubic root of 12061513 is about 229.3333753512. Note that the first 4 decimals are identical.

The spelling of 12061513 in words is "twelve million, sixty-one thousand, five hundred thirteen".

Divisors: 1 311 38783 12061513