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12735013 = 57122303

12735013 has 4 divisors (see below), whose sum is σ = 12757888. Its totient is φ = 12712140.

The previous prime is 12735007. The next prime is 12735029. The reversal of 12735013 is 31053721.

12735013 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, and also an emirpimes, since its reverse is a distinct semiprime: 31053721 = 155919919.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12735013 is a prime.

It is a super-2 number, since 2×127350132 = 324361112220338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12735043) 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, 10581 + ... + 11722.

It is an arithmetic number, because the mean of its divisors is an integer number (3189472).

Almost surely, 212735013 is an apocalyptic number.

It is an amenable number.

12735013 is a deficient number, since it is larger than the sum of its proper divisors (22875).

12735013 is an equidigital number, since it uses as much as digits as its factorization.

12735013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22874.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 12735013 is about 3568.6149974465. The cubic root of 12735013 is about 233.5248656397.

Adding to 12735013 its reverse (31053721), we get a palindrome (43788734).

The spelling of 12735013 in words is "twelve million, seven hundred thirty-five thousand, thirteen".

Divisors: 1 571 22303 12735013