13001287 has 4 divisors (see below), whose sum is σ = 14001400. Its totient is φ = 12001176.

The previous prime is 13001273. The next prime is 13001291. The reversal of 13001287 is 78210031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78210031 = 619 ⋅126349.

It is a cyclic number.

It is not a de Polignac number, because 13001287 - 2⁷ = 13001159 is a prime.

It is a Duffinian number.

13001287 is a modest number, since divided by 1287 gives 13 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001237) 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, 500037 + ... + 500062.

It is an arithmetic number, because the mean of its divisors is an integer number (3500350).

Almost surely, 2^13001287 is an apocalyptic number.

13001287 is a deficient number, since it is larger than the sum of its proper divisors (1000113).

13001287 is a wasteful number, since it uses less digits than its factorization.

13001287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000112.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 13001287 is about 3605.7297458351. The cubic root of 13001287 is about 235.1412279205.

The spelling of 13001287 in words is "thirteen million, one thousand, two hundred eighty-seven".