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12513043 = 43397733
BaseRepresentation
bin101111101110…
…111100010011
3212112201200001
4233232330103
511200404133
61124110431
7211234114
oct57567423
925481601
1012513043
117077264
124235417
13279168a
14193a20b
15117287d
hexbeef13

12513043 has 8 divisors (see below), whose sum is σ = 12853808. Its totient is φ = 12174624.

The previous prime is 12513029. The next prime is 12513049. The reversal of 12513043 is 34031521.

12513043 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12513043 - 29 = 12512531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12513043.

It is not an unprimeable number, because it can be changed into a prime (12513049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16705 + ... + 17437.

It is an arithmetic number, because the mean of its divisors is an integer number (1606726).

Almost surely, 212513043 is an apocalyptic number.

12513043 is a deficient number, since it is larger than the sum of its proper divisors (340765).

12513043 is an equidigital number, since it uses as much as digits as its factorization.

12513043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 12513043 is about 3537.3779837614. The cubic root of 12513043 is about 232.1601339455.

Adding to 12513043 its reverse (34031521), we get a palindrome (46544564).

It can be divided in two parts, 12 and 513043, that multiplied together give a palindrome (6156516).

The spelling of 12513043 in words is "twelve million, five hundred thirteen thousand, forty-three".

Divisors: 1 43 397 733 17071 31519 291001 12513043