12813071 has 4 divisors (see below), whose sum is σ = 12848352. Its totient is φ = 12777792.

The previous prime is 12813037. The next prime is 12813083. The reversal of 12813071 is 17031821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12813071 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12813091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17090 + ... + 17823.

It is an arithmetic number, because the mean of its divisors is an integer number (3212088).

Almost surely, 2^12813071 is an apocalyptic number.

12813071 is a deficient number, since it is larger than the sum of its proper divisors (35281).

12813071 is an equidigital number, since it uses as much as digits as its factorization.

12813071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35280.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 12813071 is about 3579.5350256702. The cubic root of 12813071 is about 234.0010166269.

Adding to 12813071 its reverse (17031821), we get a palindrome (29844892).

The spelling of 12813071 in words is "twelve million, eight hundred thirteen thousand, seventy-one".