13287013 has 4 divisors (see below), whose sum is σ = 14068620. Its totient is φ = 12505408.

The previous prime is 13287007. The next prime is 13287049. The reversal of 13287013 is 31078231.

13287013 = 2577² + 2578².

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

It can be written as a sum of positive squares in 2 ways, for example, as 6640929 + 6646084 = 2577^2 + 2578^2 .

It is a cyclic number.

It is not a de Polignac number, because 13287013 - 2¹³ = 13278821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13287083) 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, 390778 + ... + 390811.

It is an arithmetic number, because the mean of its divisors is an integer number (3517155).

Almost surely, 2^13287013 is an apocalyptic number.

13287013 is the 2578-th centered square number.

It is an amenable number.

13287013 is a deficient number, since it is larger than the sum of its proper divisors (781607).

13287013 is an equidigital number, since it uses as much as digits as its factorization.

13287013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781606.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 13287013 is about 3645.1355256012. The cubic root of 13287013 is about 236.8513075627.

The spelling of 13287013 in words is "thirteen million, two hundred eighty-seven thousand, thirteen".